Home / 21,629.16-32,421.47-15,691.25

Finding the Fourth Proportional to 21,629.16, 32,421.47 and 15,691.25

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Solution

The fourth proportional to 21,629.16, 32,421.47 and 15,691.25 is: 23,520.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,629.16 : 32,421.47 = 15,691.25 : x
  2. Step 2: Convert to fraction form
    21,629.16/32,421.47 = 15,691.25/x
  3. Step 3: Cross multiply
    21,629.16x = 32,421.47 × 15,691.25
  4. Step 4: Simplify right side
    21,629.16x = 508,733,393.73
  5. Step 5: Solve for x
    x = 508,733,393.73/21,629.16
  6. Step 6: Final answer
    x = 23,520.72

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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.