Home / 10,660.42-15,985.77-6,279.13

Finding the Fourth Proportional to 10,660.42, 15,985.77 and 6,279.13

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Solution

The fourth proportional to 10,660.42, 15,985.77 and 6,279.13 is: 9,415.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.42 : 15,985.77 = 6,279.13 : x
  2. Step 2: Convert to fraction form
    10,660.42/15,985.77 = 6,279.13/x
  3. Step 3: Cross multiply
    10,660.42x = 15,985.77 × 6,279.13
  4. Step 4: Simplify right side
    10,660.42x = 100,376,664.47
  5. Step 5: Solve for x
    x = 100,376,664.47/10,660.42
  6. Step 6: Final answer
    x = 9,415.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.