Home / 20,150,135.10-30,225,202.65-18,890,423.10

Finding the Fourth Proportional to 20,150,135.10, 30,225,202.65 and 18,890,423.10

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Solution

The fourth proportional to 20,150,135.10, 30,225,202.65 and 18,890,423.10 is: 28,335,634.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,150,135.10 : 30,225,202.65 = 18,890,423.10 : x
  2. Step 2: Convert to fraction form
    20,150,135.10/30,225,202.65 = 18,890,423.10/x
  3. Step 3: Cross multiply
    20,150,135.10x = 30,225,202.65 × 18,890,423.10
  4. Step 4: Simplify right side
    20,150,135.10x = 570,966,866,341,741.25
  5. Step 5: Solve for x
    x = 570,966,866,341,741.25/20,150,135.10
  6. Step 6: Final answer
    x = 28,335,634.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.