Home / 18,428.40-25,431.86-10,471.97

Finding the Fourth Proportional to 18,428.40, 25,431.86 and 10,471.97

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Solution

The fourth proportional to 18,428.40, 25,431.86 and 10,471.97 is: 14,451.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.40 : 25,431.86 = 10,471.97 : x
  2. Step 2: Convert to fraction form
    18,428.40/25,431.86 = 10,471.97/x
  3. Step 3: Cross multiply
    18,428.40x = 25,431.86 × 10,471.97
  4. Step 4: Simplify right side
    18,428.40x = 266,321,764.72
  5. Step 5: Solve for x
    x = 266,321,764.72/18,428.40
  6. Step 6: Final answer
    x = 14,451.70

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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.