Home / 11,123.32-15,348.67-6,646.13

Finding the Fourth Proportional to 11,123.32, 15,348.67 and 6,646.13

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Solution

The fourth proportional to 11,123.32, 15,348.67 and 6,646.13 is: 9,170.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,123.32 : 15,348.67 = 6,646.13 : x
  2. Step 2: Convert to fraction form
    11,123.32/15,348.67 = 6,646.13/x
  3. Step 3: Cross multiply
    11,123.32x = 15,348.67 × 6,646.13
  4. Step 4: Simplify right side
    11,123.32x = 102,009,217.78
  5. Step 5: Solve for x
    x = 102,009,217.78/11,123.32
  6. Step 6: Final answer
    x = 9,170.75

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Half 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.