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Finding the Fourth Proportional to 15,046.79, 20,767.13 and 8,672.24

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Solution

The fourth proportional to 15,046.79, 20,767.13 and 8,672.24 is: 11,969.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,046.79 : 20,767.13 = 8,672.24 : x
  2. Step 2: Convert to fraction form
    15,046.79/20,767.13 = 8,672.24/x
  3. Step 3: Cross multiply
    15,046.79x = 20,767.13 × 8,672.24
  4. Step 4: Simplify right side
    15,046.79x = 180,097,566.92
  5. Step 5: Solve for x
    x = 180,097,566.92/15,046.79
  6. Step 6: Final answer
    x = 11,969.17

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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.