Home / 18,694.32-25,834.95-15,331.74

Finding the Fourth Proportional to 18,694.32, 25,834.95 and 15,331.74

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Solution

The fourth proportional to 18,694.32, 25,834.95 and 15,331.74 is: 21,187.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.32 : 25,834.95 = 15,331.74 : x
  2. Step 2: Convert to fraction form
    18,694.32/25,834.95 = 15,331.74/x
  3. Step 3: Cross multiply
    18,694.32x = 25,834.95 × 15,331.74
  4. Step 4: Simplify right side
    18,694.32x = 396,094,736.31
  5. Step 5: Solve for x
    x = 396,094,736.31/18,694.32
  6. Step 6: Final answer
    x = 21,187.97

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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.