Home / 15,414.80-21,272.49-8,700.71

Finding the Fourth Proportional to 15,414.80, 21,272.49 and 8,700.71

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Solution

The fourth proportional to 15,414.80, 21,272.49 and 8,700.71 is: 12,007.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,414.80 : 21,272.49 = 8,700.71 : x
  2. Step 2: Convert to fraction form
    15,414.80/21,272.49 = 8,700.71/x
  3. Step 3: Cross multiply
    15,414.80x = 21,272.49 × 8,700.71
  4. Step 4: Simplify right side
    15,414.80x = 185,085,660.11
  5. Step 5: Solve for x
    x = 185,085,660.11/15,414.80
  6. Step 6: Final answer
    x = 12,007.01

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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.