Home / 13,508.49-18,640.17-7,539.96

Finding the Fourth Proportional to 13,508.49, 18,640.17 and 7,539.96

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Solution

The fourth proportional to 13,508.49, 18,640.17 and 7,539.96 is: 10,404.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.49 : 18,640.17 = 7,539.96 : x
  2. Step 2: Convert to fraction form
    13,508.49/18,640.17 = 7,539.96/x
  3. Step 3: Cross multiply
    13,508.49x = 18,640.17 × 7,539.96
  4. Step 4: Simplify right side
    13,508.49x = 140,546,136.19
  5. Step 5: Solve for x
    x = 140,546,136.19/13,508.49
  6. Step 6: Final answer
    x = 10,404.28

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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.