Home / 11,189.78-15,440.70-6,473.18

Finding the Fourth Proportional to 11,189.78, 15,440.70 and 6,473.18

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Solution

The fourth proportional to 11,189.78, 15,440.70 and 6,473.18 is: 8,932.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,189.78 : 15,440.70 = 6,473.18 : x
  2. Step 2: Convert to fraction form
    11,189.78/15,440.70 = 6,473.18/x
  3. Step 3: Cross multiply
    11,189.78x = 15,440.70 × 6,473.18
  4. Step 4: Simplify right side
    11,189.78x = 99,950,430.43
  5. Step 5: Solve for x
    x = 99,950,430.43/11,189.78
  6. Step 6: Final answer
    x = 8,932.30

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Double scale
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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.