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Finding the Fourth Proportional to 16,491.16, 24,738.36 and 7,129.72

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Solution

The fourth proportional to 16,491.16, 24,738.36 and 7,129.72 is: 10,695.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,491.16 : 24,738.36 = 7,129.72 : x
  2. Step 2: Convert to fraction form
    16,491.16/24,738.36 = 7,129.72/x
  3. Step 3: Cross multiply
    16,491.16x = 24,738.36 × 7,129.72
  4. Step 4: Simplify right side
    16,491.16x = 176,377,580.06
  5. Step 5: Solve for x
    x = 176,377,580.06/16,491.16
  6. Step 6: Final answer
    x = 10,695.28

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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.