Home / 28,161.61-38,862.67-15,414.74

Finding the Fourth Proportional to 28,161.61, 38,862.67 and 15,414.74

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Solution

The fourth proportional to 28,161.61, 38,862.67 and 15,414.74 is: 21,272.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.61 : 38,862.67 = 15,414.74 : x
  2. Step 2: Convert to fraction form
    28,161.61/38,862.67 = 15,414.74/x
  3. Step 3: Cross multiply
    28,161.61x = 38,862.67 × 15,414.74
  4. Step 4: Simplify right side
    28,161.61x = 599,057,895.54
  5. Step 5: Solve for x
    x = 599,057,895.54/28,161.61
  6. Step 6: Final answer
    x = 21,272.15

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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.