Home / 20,177.10-30,265.65-12,303.90

Finding the Fourth Proportional to 20,177.10, 30,265.65 and 12,303.90

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Solution

The fourth proportional to 20,177.10, 30,265.65 and 12,303.90 is: 18,455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,177.10 : 30,265.65 = 12,303.90 : x
  2. Step 2: Convert to fraction form
    20,177.10/30,265.65 = 12,303.90/x
  3. Step 3: Cross multiply
    20,177.10x = 30,265.65 × 12,303.90
  4. Step 4: Simplify right side
    20,177.10x = 372,385,531.04
  5. Step 5: Solve for x
    x = 372,385,531.04/20,177.10
  6. Step 6: Final answer
    x = 18,455.85

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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.