Home / 18,742.34-25,863.90-10,778.96

Finding the Fourth Proportional to 18,742.34, 25,863.90 and 10,778.96

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Solution

The fourth proportional to 18,742.34, 25,863.90 and 10,778.96 is: 14,874.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.34 : 25,863.90 = 10,778.96 : x
  2. Step 2: Convert to fraction form
    18,742.34/25,863.90 = 10,778.96/x
  3. Step 3: Cross multiply
    18,742.34x = 25,863.90 × 10,778.96
  4. Step 4: Simplify right side
    18,742.34x = 278,785,943.54
  5. Step 5: Solve for x
    x = 278,785,943.54/18,742.34
  6. Step 6: Final answer
    x = 14,874.66

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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.