Home / 15,129.56-20,877.90-8,414.84

Finding the Fourth Proportional to 15,129.56, 20,877.90 and 8,414.84

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Solution

The fourth proportional to 15,129.56, 20,877.90 and 8,414.84 is: 11,611.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129.56 : 20,877.90 = 8,414.84 : x
  2. Step 2: Convert to fraction form
    15,129.56/20,877.90 = 8,414.84/x
  3. Step 3: Cross multiply
    15,129.56x = 20,877.90 × 8,414.84
  4. Step 4: Simplify right side
    15,129.56x = 175,684,188.04
  5. Step 5: Solve for x
    x = 175,684,188.04/15,129.56
  6. Step 6: Final answer
    x = 11,611.98

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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.