Home / 11,178.35-15,425.20-6,142.31

Finding the Fourth Proportional to 11,178.35, 15,425.20 and 6,142.31

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Solution

The fourth proportional to 11,178.35, 15,425.20 and 6,142.31 is: 8,475.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,178.35 : 15,425.20 = 6,142.31 : x
  2. Step 2: Convert to fraction form
    11,178.35/15,425.20 = 6,142.31/x
  3. Step 3: Cross multiply
    11,178.35x = 15,425.20 × 6,142.31
  4. Step 4: Simplify right side
    11,178.35x = 94,746,360.21
  5. Step 5: Solve for x
    x = 94,746,360.21/11,178.35
  6. Step 6: Final answer
    x = 8,475.88

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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.