Home / 28,476.88-39,298.17-15,729.83

Finding the Fourth Proportional to 28,476.88, 39,298.17 and 15,729.83

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Solution

The fourth proportional to 28,476.88, 39,298.17 and 15,729.83 is: 21,707.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,476.88 : 39,298.17 = 15,729.83 : x
  2. Step 2: Convert to fraction form
    28,476.88/39,298.17 = 15,729.83/x
  3. Step 3: Cross multiply
    28,476.88x = 39,298.17 × 15,729.83
  4. Step 4: Simplify right side
    28,476.88x = 618,153,454.76
  5. Step 5: Solve for x
    x = 618,153,454.76/28,476.88
  6. Step 6: Final answer
    x = 21,707.21

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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.