Home / 11,110.78-15,332.71-6,633.69

Finding the Fourth Proportional to 11,110.78, 15,332.71 and 6,633.69

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Solution

The fourth proportional to 11,110.78, 15,332.71 and 6,633.69 is: 9,154.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,110.78 : 15,332.71 = 6,633.69 : x
  2. Step 2: Convert to fraction form
    11,110.78/15,332.71 = 6,633.69/x
  3. Step 3: Cross multiply
    11,110.78x = 15,332.71 × 6,633.69
  4. Step 4: Simplify right side
    11,110.78x = 101,712,428.42
  5. Step 5: Solve for x
    x = 101,712,428.42/11,110.78
  6. Step 6: Final answer
    x = 9,154.39

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Half scale
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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.