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Finding the Fourth Proportional to 10,479.43, 15,729.48 and 7,698.29

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Solution

The fourth proportional to 10,479.43, 15,729.48 and 7,698.29 is: 11,555.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479.43 : 15,729.48 = 7,698.29 : x
  2. Step 2: Convert to fraction form
    10,479.43/15,729.48 = 7,698.29/x
  3. Step 3: Cross multiply
    10,479.43x = 15,729.48 × 7,698.29
  4. Step 4: Simplify right side
    10,479.43x = 121,090,098.59
  5. Step 5: Solve for x
    x = 121,090,098.59/10,479.43
  6. Step 6: Final answer
    x = 11,555.03

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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.