Home / 20,127.61-27,759.33-15,102.97

Finding the Fourth Proportional to 20,127.61, 27,759.33 and 15,102.97

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Solution

The fourth proportional to 20,127.61, 27,759.33 and 15,102.97 is: 20,829.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.61 : 27,759.33 = 15,102.97 : x
  2. Step 2: Convert to fraction form
    20,127.61/27,759.33 = 15,102.97/x
  3. Step 3: Cross multiply
    20,127.61x = 27,759.33 × 15,102.97
  4. Step 4: Simplify right side
    20,127.61x = 419,248,328.21
  5. Step 5: Solve for x
    x = 419,248,328.21/20,127.61
  6. Step 6: Final answer
    x = 20,829.51

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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.