Home / 11,101.32-15,318.54-6,387.12

Finding the Fourth Proportional to 11,101.32, 15,318.54 and 6,387.12

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Solution

The fourth proportional to 11,101.32, 15,318.54 and 6,387.12 is: 8,813.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,101.32 : 15,318.54 = 6,387.12 : x
  2. Step 2: Convert to fraction form
    11,101.32/15,318.54 = 6,387.12/x
  3. Step 3: Cross multiply
    11,101.32x = 15,318.54 × 6,387.12
  4. Step 4: Simplify right side
    11,101.32x = 97,841,353.20
  5. Step 5: Solve for x
    x = 97,841,353.20/11,101.32
  6. Step 6: Final answer
    x = 8,813.49

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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.