Home / 22,721.82-34,088.10-7,139.40

Finding the Fourth Proportional to 22,721.82, 34,088.10 and 7,139.40

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Solution

The fourth proportional to 22,721.82, 34,088.10 and 7,139.40 is: 10,710.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.82 : 34,088.10 = 7,139.40 : x
  2. Step 2: Convert to fraction form
    22,721.82/34,088.10 = 7,139.40/x
  3. Step 3: Cross multiply
    22,721.82x = 34,088.10 × 7,139.40
  4. Step 4: Simplify right side
    22,721.82x = 243,368,581.14
  5. Step 5: Solve for x
    x = 243,368,581.14/22,721.82
  6. Step 6: Final answer
    x = 10,710.79

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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.