Home / 11,189.76-15,440.64-6,473.28

Finding the Fourth Proportional to 11,189.76, 15,440.64 and 6,473.28

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Solution

The fourth proportional to 11,189.76, 15,440.64 and 6,473.28 is: 8,932.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,189.76 : 15,440.64 = 6,473.28 : x
  2. Step 2: Convert to fraction form
    11,189.76/15,440.64 = 6,473.28/x
  3. Step 3: Cross multiply
    11,189.76x = 15,440.64 × 6,473.28
  4. Step 4: Simplify right side
    11,189.76x = 99,951,586.10
  5. Step 5: Solve for x
    x = 99,951,586.10/11,189.76
  6. Step 6: Final answer
    x = 8,932.42

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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.