Home / 21,515.36-29,691.08-12,083.92

Finding the Fourth Proportional to 21,515.36, 29,691.08 and 12,083.92

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Solution

The fourth proportional to 21,515.36, 29,691.08 and 12,083.92 is: 16,675.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.36 : 29,691.08 = 12,083.92 : x
  2. Step 2: Convert to fraction form
    21,515.36/29,691.08 = 12,083.92/x
  3. Step 3: Cross multiply
    21,515.36x = 29,691.08 × 12,083.92
  4. Step 4: Simplify right side
    21,515.36x = 358,784,635.43
  5. Step 5: Solve for x
    x = 358,784,635.43/21,515.36
  6. Step 6: Final answer
    x = 16,675.74

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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.