Home / 28,490.54-39,316.46-15,743.70

Finding the Fourth Proportional to 28,490.54, 39,316.46 and 15,743.70

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Solution

The fourth proportional to 28,490.54, 39,316.46 and 15,743.70 is: 21,726.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.54 : 39,316.46 = 15,743.70 : x
  2. Step 2: Convert to fraction form
    28,490.54/39,316.46 = 15,743.70/x
  3. Step 3: Cross multiply
    28,490.54x = 39,316.46 × 15,743.70
  4. Step 4: Simplify right side
    28,490.54x = 618,986,472.58
  5. Step 5: Solve for x
    x = 618,986,472.58/28,490.54
  6. Step 6: Final answer
    x = 21,726.04

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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.