Home / 11,279.20-15,566.12-6,499.92

Finding the Fourth Proportional to 11,279.20, 15,566.12 and 6,499.92

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Solution

The fourth proportional to 11,279.20, 15,566.12 and 6,499.92 is: 8,970.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.20 : 15,566.12 = 6,499.92 : x
  2. Step 2: Convert to fraction form
    11,279.20/15,566.12 = 6,499.92/x
  3. Step 3: Cross multiply
    11,279.20x = 15,566.12 × 6,499.92
  4. Step 4: Simplify right side
    11,279.20x = 101,178,534.71
  5. Step 5: Solve for x
    x = 101,178,534.71/11,279.20
  6. Step 6: Final answer
    x = 8,970.36

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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.