Home / 21,679.32-29,915.82-12,248.76

Finding the Fourth Proportional to 21,679.32, 29,915.82 and 12,248.76

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Solution

The fourth proportional to 21,679.32, 29,915.82 and 12,248.76 is: 16,902.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679.32 : 29,915.82 = 12,248.76 : x
  2. Step 2: Convert to fraction form
    21,679.32/29,915.82 = 12,248.76/x
  3. Step 3: Cross multiply
    21,679.32x = 29,915.82 × 12,248.76
  4. Step 4: Simplify right side
    21,679.32x = 366,431,699.38
  5. Step 5: Solve for x
    x = 366,431,699.38/21,679.32
  6. Step 6: Final answer
    x = 16,902.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.