Home / 21,520.56-29,701.14-12,089.13

Finding the Fourth Proportional to 21,520.56, 29,701.14 and 12,089.13

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Solution

The fourth proportional to 21,520.56, 29,701.14 and 12,089.13 is: 16,684.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,520.56 : 29,701.14 = 12,089.13 : x
  2. Step 2: Convert to fraction form
    21,520.56/29,701.14 = 12,089.13/x
  3. Step 3: Cross multiply
    21,520.56x = 29,701.14 × 12,089.13
  4. Step 4: Simplify right side
    21,520.56x = 359,060,942.61
  5. Step 5: Solve for x
    x = 359,060,942.61/21,520.56
  6. Step 6: Final answer
    x = 16,684.55

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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.