Home / 22,296.75-30,761.85-13,220.25

Finding the Fourth Proportional to 22,296.75, 30,761.85 and 13,220.25

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Solution

The fourth proportional to 22,296.75, 30,761.85 and 13,220.25 is: 18,239.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,296.75 : 30,761.85 = 13,220.25 : x
  2. Step 2: Convert to fraction form
    22,296.75/30,761.85 = 13,220.25/x
  3. Step 3: Cross multiply
    22,296.75x = 30,761.85 × 13,220.25
  4. Step 4: Simplify right side
    22,296.75x = 406,679,347.46
  5. Step 5: Solve for x
    x = 406,679,347.46/22,296.75
  6. Step 6: Final answer
    x = 18,239.40

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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.