Home / 13,449.10-18,531.03-9,906.70

Finding the Fourth Proportional to 13,449.10, 18,531.03 and 9,906.70

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Solution

The fourth proportional to 13,449.10, 18,531.03 and 9,906.70 is: 13,650.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.10 : 18,531.03 = 9,906.70 : x
  2. Step 2: Convert to fraction form
    13,449.10/18,531.03 = 9,906.70/x
  3. Step 3: Cross multiply
    13,449.10x = 18,531.03 × 9,906.70
  4. Step 4: Simplify right side
    13,449.10x = 183,581,354.90
  5. Step 5: Solve for x
    x = 183,581,354.90/13,449.10
  6. Step 6: Final answer
    x = 13,650.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.