Home / 20,257.10-30,385.65-7,110.80

Finding the Fourth Proportional to 20,257.10, 30,385.65 and 7,110.80

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Solution

The fourth proportional to 20,257.10, 30,385.65 and 7,110.80 is: 10,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,257.10 : 30,385.65 = 7,110.80 : x
  2. Step 2: Convert to fraction form
    20,257.10/30,385.65 = 7,110.80/x
  3. Step 3: Cross multiply
    20,257.10x = 30,385.65 × 7,110.80
  4. Step 4: Simplify right side
    20,257.10x = 216,066,280.02
  5. Step 5: Solve for x
    x = 216,066,280.02/20,257.10
  6. Step 6: Final answer
    x = 10,666.20

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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.