Home / 21,250.89-32,002.85-18,510.66

Finding the Fourth Proportional to 21,250.89, 32,002.85 and 18,510.66

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Solution

The fourth proportional to 21,250.89, 32,002.85 and 18,510.66 is: 27,876.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.89 : 32,002.85 = 18,510.66 : x
  2. Step 2: Convert to fraction form
    21,250.89/32,002.85 = 18,510.66/x
  3. Step 3: Cross multiply
    21,250.89x = 32,002.85 × 18,510.66
  4. Step 4: Simplify right side
    21,250.89x = 592,393,875.38
  5. Step 5: Solve for x
    x = 592,393,875.38/21,250.89
  6. Step 6: Final answer
    x = 27,876.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.