Home / 22,215.22-30,656.93-12,143.66

Finding the Fourth Proportional to 22,215.22, 30,656.93 and 12,143.66

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Solution

The fourth proportional to 22,215.22, 30,656.93 and 12,143.66 is: 16,758.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,215.22 : 30,656.93 = 12,143.66 : x
  2. Step 2: Convert to fraction form
    22,215.22/30,656.93 = 12,143.66/x
  3. Step 3: Cross multiply
    22,215.22x = 30,656.93 × 12,143.66
  4. Step 4: Simplify right side
    22,215.22x = 372,287,361.31
  5. Step 5: Solve for x
    x = 372,287,361.31/22,215.22
  6. Step 6: Final answer
    x = 16,758.21

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.