Home / 12,220.25-18,332.66-5,557.23

Finding the Fourth Proportional to 12,220.25, 18,332.66 and 5,557.23

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Solution

The fourth proportional to 12,220.25, 18,332.66 and 5,557.23 is: 8,336.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.25 : 18,332.66 = 5,557.23 : x
  2. Step 2: Convert to fraction form
    12,220.25/18,332.66 = 5,557.23/x
  3. Step 3: Cross multiply
    12,220.25x = 18,332.66 × 5,557.23
  4. Step 4: Simplify right side
    12,220.25x = 101,878,808.13
  5. Step 5: Solve for x
    x = 101,878,808.13/12,220.25
  6. Step 6: Final answer
    x = 8,336.88

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.