Home / 15,451.30-21,322.83-8,377.69

Finding the Fourth Proportional to 15,451.30, 21,322.83 and 8,377.69

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Solution

The fourth proportional to 15,451.30, 21,322.83 and 8,377.69 is: 11,561.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.30 : 21,322.83 = 8,377.69 : x
  2. Step 2: Convert to fraction form
    15,451.30/21,322.83 = 8,377.69/x
  3. Step 3: Cross multiply
    15,451.30x = 21,322.83 × 8,377.69
  4. Step 4: Simplify right side
    15,451.30x = 178,636,059.66
  5. Step 5: Solve for x
    x = 178,636,059.66/15,451.30
  6. Step 6: Final answer
    x = 11,561.23

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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.