Home / 15,591.69-21,516.39-8,518.14

Finding the Fourth Proportional to 15,591.69, 21,516.39 and 8,518.14

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Solution

The fourth proportional to 15,591.69, 21,516.39 and 8,518.14 is: 11,754.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.69 : 21,516.39 = 8,518.14 : x
  2. Step 2: Convert to fraction form
    15,591.69/21,516.39 = 8,518.14/x
  3. Step 3: Cross multiply
    15,591.69x = 21,516.39 × 8,518.14
  4. Step 4: Simplify right side
    15,591.69x = 183,279,622.31
  5. Step 5: Solve for x
    x = 183,279,622.31/15,591.69
  6. Step 6: Final answer
    x = 11,754.96

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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.