Home / 10,961.38-15,128.68-6,182.79

Finding the Fourth Proportional to 10,961.38, 15,128.68 and 6,182.79

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Solution

The fourth proportional to 10,961.38, 15,128.68 and 6,182.79 is: 8,533.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.38 : 15,128.68 = 6,182.79 : x
  2. Step 2: Convert to fraction form
    10,961.38/15,128.68 = 6,182.79/x
  3. Step 3: Cross multiply
    10,961.38x = 15,128.68 × 6,182.79
  4. Step 4: Simplify right side
    10,961.38x = 93,537,451.42
  5. Step 5: Solve for x
    x = 93,537,451.42/10,961.38
  6. Step 6: Final answer
    x = 8,533.36

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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.