Home / 21,516.52-29,690.40-12,084.88

Finding the Fourth Proportional to 21,516.52, 29,690.40 and 12,084.88

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Solution

The fourth proportional to 21,516.52, 29,690.40 and 12,084.88 is: 16,675.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.52 : 29,690.40 = 12,084.88 : x
  2. Step 2: Convert to fraction form
    21,516.52/29,690.40 = 12,084.88/x
  3. Step 3: Cross multiply
    21,516.52x = 29,690.40 × 12,084.88
  4. Step 4: Simplify right side
    21,516.52x = 358,804,921.15
  5. Step 5: Solve for x
    x = 358,804,921.15/21,516.52
  6. Step 6: Final answer
    x = 16,675.79

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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.