Home / 21,689.64-29,934.90-13,732.61

Finding the Fourth Proportional to 21,689.64, 29,934.90 and 13,732.61

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Solution

The fourth proportional to 21,689.64, 29,934.90 and 13,732.61 is: 18,953.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,689.64 : 29,934.90 = 13,732.61 : x
  2. Step 2: Convert to fraction form
    21,689.64/29,934.90 = 13,732.61/x
  3. Step 3: Cross multiply
    21,689.64x = 29,934.90 × 13,732.61
  4. Step 4: Simplify right side
    21,689.64x = 411,084,157.41
  5. Step 5: Solve for x
    x = 411,084,157.41/21,689.64
  6. Step 6: Final answer
    x = 18,953.02

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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.