Home / 22,721.13-34,081.70-7,138.75

Finding the Fourth Proportional to 22,721.13, 34,081.70 and 7,138.75

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Solution

The fourth proportional to 22,721.13, 34,081.70 and 7,138.75 is: 10,708.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.13 : 34,081.70 = 7,138.75 : x
  2. Step 2: Convert to fraction form
    22,721.13/34,081.70 = 7,138.75/x
  3. Step 3: Cross multiply
    22,721.13x = 34,081.70 × 7,138.75
  4. Step 4: Simplify right side
    22,721.13x = 243,300,735.88
  5. Step 5: Solve for x
    x = 243,300,735.88/22,721.13
  6. Step 6: Final answer
    x = 10,708.13

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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.