Home / 13,451.32-20,177.16-5,135.14

Finding the Fourth Proportional to 13,451.32, 20,177.16 and 5,135.14

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Solution

The fourth proportional to 13,451.32, 20,177.16 and 5,135.14 is: 7,702.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.32 : 20,177.16 = 5,135.14 : x
  2. Step 2: Convert to fraction form
    13,451.32/20,177.16 = 5,135.14/x
  3. Step 3: Cross multiply
    13,451.32x = 20,177.16 × 5,135.14
  4. Step 4: Simplify right side
    13,451.32x = 103,612,541.40
  5. Step 5: Solve for x
    x = 103,612,541.40/13,451.32
  6. Step 6: Final answer
    x = 7,702.78

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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.