Home / 21,379.73-29,484.86-17,806.55

Finding the Fourth Proportional to 21,379.73, 29,484.86 and 17,806.55

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Solution

The fourth proportional to 21,379.73, 29,484.86 and 17,806.55 is: 24,557.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.73 : 29,484.86 = 17,806.55 : x
  2. Step 2: Convert to fraction form
    21,379.73/29,484.86 = 17,806.55/x
  3. Step 3: Cross multiply
    21,379.73x = 29,484.86 × 17,806.55
  4. Step 4: Simplify right side
    21,379.73x = 525,023,397.38
  5. Step 5: Solve for x
    x = 525,023,397.38/21,379.73
  6. Step 6: Final answer
    x = 24,557.07

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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.