Home / 11,123.55-15,347.34-6,406.92

Finding the Fourth Proportional to 11,123.55, 15,347.34 and 6,406.92

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Solution

The fourth proportional to 11,123.55, 15,347.34 and 6,406.92 is: 8,839.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,123.55 : 15,347.34 = 6,406.92 : x
  2. Step 2: Convert to fraction form
    11,123.55/15,347.34 = 6,406.92/x
  3. Step 3: Cross multiply
    11,123.55x = 15,347.34 × 6,406.92
  4. Step 4: Simplify right side
    11,123.55x = 98,329,179.59
  5. Step 5: Solve for x
    x = 98,329,179.59/11,123.55
  6. Step 6: Final answer
    x = 8,839.73

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Double 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.