Home / 12,217.50-18,326.25-4,426.31

Finding the Fourth Proportional to 12,217.50, 18,326.25 and 4,426.31

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Solution

The fourth proportional to 12,217.50, 18,326.25 and 4,426.31 is: 6,639.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217.50 : 18,326.25 = 4,426.31 : x
  2. Step 2: Convert to fraction form
    12,217.50/18,326.25 = 4,426.31/x
  3. Step 3: Cross multiply
    12,217.50x = 18,326.25 × 4,426.31
  4. Step 4: Simplify right side
    12,217.50x = 81,117,709.45
  5. Step 5: Solve for x
    x = 81,117,709.45/12,217.50
  6. Step 6: Final answer
    x = 6,639.47

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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.