Home / 11,157.38-15,397.06-6,441.56

Finding the Fourth Proportional to 11,157.38, 15,397.06 and 6,441.56

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Solution

The fourth proportional to 11,157.38, 15,397.06 and 6,441.56 is: 8,889.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.38 : 15,397.06 = 6,441.56 : x
  2. Step 2: Convert to fraction form
    11,157.38/15,397.06 = 6,441.56/x
  3. Step 3: Cross multiply
    11,157.38x = 15,397.06 × 6,441.56
  4. Step 4: Simplify right side
    11,157.38x = 99,181,053.61
  5. Step 5: Solve for x
    x = 99,181,053.61/11,157.38
  6. Step 6: Final answer
    x = 8,889.28

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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.