Home / 10,879.42-15,005.19-6,631.18

Finding the Fourth Proportional to 10,879.42, 15,005.19 and 6,631.18

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Solution

The fourth proportional to 10,879.42, 15,005.19 and 6,631.18 is: 9,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.42 : 15,005.19 = 6,631.18 : x
  2. Step 2: Convert to fraction form
    10,879.42/15,005.19 = 6,631.18/x
  3. Step 3: Cross multiply
    10,879.42x = 15,005.19 × 6,631.18
  4. Step 4: Simplify right side
    10,879.42x = 99,502,115.82
  5. Step 5: Solve for x
    x = 99,502,115.82/10,879.42
  6. Step 6: Final answer
    x = 9,145.90

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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.