Home / 22,239.98-30,686.30-13,286.12

Finding the Fourth Proportional to 22,239.98, 30,686.30 and 13,286.12

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Solution

The fourth proportional to 22,239.98, 30,686.30 and 13,286.12 is: 18,331.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,239.98 : 30,686.30 = 13,286.12 : x
  2. Step 2: Convert to fraction form
    22,239.98/30,686.30 = 13,286.12/x
  3. Step 3: Cross multiply
    22,239.98x = 30,686.30 × 13,286.12
  4. Step 4: Simplify right side
    22,239.98x = 407,701,864.16
  5. Step 5: Solve for x
    x = 407,701,864.16/22,239.98
  6. Step 6: Final answer
    x = 18,331.93

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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.