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Finding the Fourth Proportional to 10,007.89, 15,024.13 and 9,491.20

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Solution

The fourth proportional to 10,007.89, 15,024.13 and 9,491.20 is: 14,248.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,007.89 : 15,024.13 = 9,491.20 : x
  2. Step 2: Convert to fraction form
    10,007.89/15,024.13 = 9,491.20/x
  3. Step 3: Cross multiply
    10,007.89x = 15,024.13 × 9,491.20
  4. Step 4: Simplify right side
    10,007.89x = 142,596,961.37
  5. Step 5: Solve for x
    x = 142,596,961.37/10,007.89
  6. Step 6: Final answer
    x = 14,248.46

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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.