Home / 11,555.19-15,930.68-7,574.85

Finding the Fourth Proportional to 11,555.19, 15,930.68 and 7,574.85

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Solution

The fourth proportional to 11,555.19, 15,930.68 and 7,574.85 is: 10,443.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,555.19 : 15,930.68 = 7,574.85 : x
  2. Step 2: Convert to fraction form
    11,555.19/15,930.68 = 7,574.85/x
  3. Step 3: Cross multiply
    11,555.19x = 15,930.68 × 7,574.85
  4. Step 4: Simplify right side
    11,555.19x = 120,672,473.52
  5. Step 5: Solve for x
    x = 120,672,473.52/11,555.19
  6. Step 6: Final answer
    x = 10,443.14

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Half scale
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Double scale
Find fourth proportional to 11,556.19, 15,932.05 and 7,575.85
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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.