Home / 25,407.38-38,110.72-7,877.21

Finding the Fourth Proportional to 25,407.38, 38,110.72 and 7,877.21

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Solution

The fourth proportional to 25,407.38, 38,110.72 and 7,877.21 is: 11,815.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,407.38 : 38,110.72 = 7,877.21 : x
  2. Step 2: Convert to fraction form
    25,407.38/38,110.72 = 7,877.21/x
  3. Step 3: Cross multiply
    25,407.38x = 38,110.72 × 7,877.21
  4. Step 4: Simplify right side
    25,407.38x = 300,205,949.21
  5. Step 5: Solve for x
    x = 300,205,949.21/25,407.38
  6. Step 6: Final answer
    x = 11,815.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.