Home / 21,250.16-31,880.28-6,459.92

Finding the Fourth Proportional to 21,250.16, 31,880.28 and 6,459.92

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Solution

The fourth proportional to 21,250.16, 31,880.28 and 6,459.92 is: 9,691.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.16 : 31,880.28 = 6,459.92 : x
  2. Step 2: Convert to fraction form
    21,250.16/31,880.28 = 6,459.92/x
  3. Step 3: Cross multiply
    21,250.16x = 31,880.28 × 6,459.92
  4. Step 4: Simplify right side
    21,250.16x = 205,944,058.38
  5. Step 5: Solve for x
    x = 205,944,058.38/21,250.16
  6. Step 6: Final answer
    x = 9,691.41

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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.