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Finding the Fourth Proportional to 13,354.01, 20,042.89 and 7,119.17

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Solution

The fourth proportional to 13,354.01, 20,042.89 and 7,119.17 is: 10,685.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,354.01 : 20,042.89 = 7,119.17 : x
  2. Step 2: Convert to fraction form
    13,354.01/20,042.89 = 7,119.17/x
  3. Step 3: Cross multiply
    13,354.01x = 20,042.89 × 7,119.17
  4. Step 4: Simplify right side
    13,354.01x = 142,688,741.20
  5. Step 5: Solve for x
    x = 142,688,741.20/13,354.01
  6. Step 6: Final answer
    x = 10,685.09

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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.