Home / 10,209.43-15,211.47-9,538.75

Finding the Fourth Proportional to 10,209.43, 15,211.47 and 9,538.75

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Solution

The fourth proportional to 10,209.43, 15,211.47 and 9,538.75 is: 14,212.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,209.43 : 15,211.47 = 9,538.75 : x
  2. Step 2: Convert to fraction form
    10,209.43/15,211.47 = 9,538.75/x
  3. Step 3: Cross multiply
    10,209.43x = 15,211.47 × 9,538.75
  4. Step 4: Simplify right side
    10,209.43x = 145,098,409.46
  5. Step 5: Solve for x
    x = 145,098,409.46/10,209.43
  6. Step 6: Final answer
    x = 14,212.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.