Home / 28,553.23-39,402.22-15,805.66

Finding the Fourth Proportional to 28,553.23, 39,402.22 and 15,805.66

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Solution

The fourth proportional to 28,553.23, 39,402.22 and 15,805.66 is: 21,811.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,553.23 : 39,402.22 = 15,805.66 : x
  2. Step 2: Convert to fraction form
    28,553.23/39,402.22 = 15,805.66/x
  3. Step 3: Cross multiply
    28,553.23x = 39,402.22 × 15,805.66
  4. Step 4: Simplify right side
    28,553.23x = 622,778,092.57
  5. Step 5: Solve for x
    x = 622,778,092.57/28,553.23
  6. Step 6: Final answer
    x = 21,811.13

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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.