Home / 28,726.92-39,640.56-15,979.56

Finding the Fourth Proportional to 28,726.92, 39,640.56 and 15,979.56

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Solution

The fourth proportional to 28,726.92, 39,640.56 and 15,979.56 is: 22,050.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,726.92 : 39,640.56 = 15,979.56 : x
  2. Step 2: Convert to fraction form
    28,726.92/39,640.56 = 15,979.56/x
  3. Step 3: Cross multiply
    28,726.92x = 39,640.56 × 15,979.56
  4. Step 4: Simplify right side
    28,726.92x = 633,438,706.95
  5. Step 5: Solve for x
    x = 633,438,706.95/28,726.92
  6. Step 6: Final answer
    x = 22,050.35

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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.