Home / 21,516.16-29,689.08-12,082.90

Finding the Fourth Proportional to 21,516.16, 29,689.08 and 12,082.90

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Solution

The fourth proportional to 21,516.16, 29,689.08 and 12,082.90 is: 16,672.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.16 : 29,689.08 = 12,082.90 : x
  2. Step 2: Convert to fraction form
    21,516.16/29,689.08 = 12,082.90/x
  3. Step 3: Cross multiply
    21,516.16x = 29,689.08 × 12,082.90
  4. Step 4: Simplify right side
    21,516.16x = 358,730,184.73
  5. Step 5: Solve for x
    x = 358,730,184.73/21,516.16
  6. Step 6: Final answer
    x = 16,672.59

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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.