Home / 21,335.55-31,957.15-15,479.25

Finding the Fourth Proportional to 21,335.55, 31,957.15 and 15,479.25

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Solution

The fourth proportional to 21,335.55, 31,957.15 and 15,479.25 is: 23,185.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.55 : 31,957.15 = 15,479.25 : x
  2. Step 2: Convert to fraction form
    21,335.55/31,957.15 = 15,479.25/x
  3. Step 3: Cross multiply
    21,335.55x = 31,957.15 × 15,479.25
  4. Step 4: Simplify right side
    21,335.55x = 494,672,714.14
  5. Step 5: Solve for x
    x = 494,672,714.14/21,335.55
  6. Step 6: Final answer
    x = 23,185.37

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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.