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Finding the Fourth Proportional to 19,657.56, 29,479.05 and 10,649.89

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Solution

The fourth proportional to 19,657.56, 29,479.05 and 10,649.89 is: 15,970.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,657.56 : 29,479.05 = 10,649.89 : x
  2. Step 2: Convert to fraction form
    19,657.56/29,479.05 = 10,649.89/x
  3. Step 3: Cross multiply
    19,657.56x = 29,479.05 × 10,649.89
  4. Step 4: Simplify right side
    19,657.56x = 313,948,676.65
  5. Step 5: Solve for x
    x = 313,948,676.65/19,657.56
  6. Step 6: Final answer
    x = 15,970.88

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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.