Home / 10,013.72-15,020.57-9,404.78

Finding the Fourth Proportional to 10,013.72, 15,020.57 and 9,404.78

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Solution

The fourth proportional to 10,013.72, 15,020.57 and 9,404.78 is: 14,107.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,013.72 : 15,020.57 = 9,404.78 : x
  2. Step 2: Convert to fraction form
    10,013.72/15,020.57 = 9,404.78/x
  3. Step 3: Cross multiply
    10,013.72x = 15,020.57 × 9,404.78
  4. Step 4: Simplify right side
    10,013.72x = 141,265,104.73
  5. Step 5: Solve for x
    x = 141,265,104.73/10,013.72
  6. Step 6: Final answer
    x = 14,107.16

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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.