Home / 11,141.20-15,376.40-6,425.38

Finding the Fourth Proportional to 11,141.20, 15,376.40 and 6,425.38

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Solution

The fourth proportional to 11,141.20, 15,376.40 and 6,425.38 is: 8,867.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,141.20 : 15,376.40 = 6,425.38 : x
  2. Step 2: Convert to fraction form
    11,141.20/15,376.40 = 6,425.38/x
  3. Step 3: Cross multiply
    11,141.20x = 15,376.40 × 6,425.38
  4. Step 4: Simplify right side
    11,141.20x = 98,799,213.03
  5. Step 5: Solve for x
    x = 98,799,213.03/11,141.20
  6. Step 6: Final answer
    x = 8,867.91

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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.