Home / 12,228.57-18,342.86-11,605.28

Finding the Fourth Proportional to 12,228.57, 18,342.86 and 11,605.28

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Solution

The fourth proportional to 12,228.57, 18,342.86 and 11,605.28 is: 17,407.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.57 : 18,342.86 = 11,605.28 : x
  2. Step 2: Convert to fraction form
    12,228.57/18,342.86 = 11,605.28/x
  3. Step 3: Cross multiply
    12,228.57x = 18,342.86 × 11,605.28
  4. Step 4: Simplify right side
    12,228.57x = 212,873,876.56
  5. Step 5: Solve for x
    x = 212,873,876.56/12,228.57
  6. Step 6: Final answer
    x = 17,407.91

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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.