Home / 22,721.70-34,085.78-7,140.54

Finding the Fourth Proportional to 22,721.70, 34,085.78 and 7,140.54

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Solution

The fourth proportional to 22,721.70, 34,085.78 and 7,140.54 is: 10,711.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.70 : 34,085.78 = 7,140.54 : x
  2. Step 2: Convert to fraction form
    22,721.70/34,085.78 = 7,140.54/x
  3. Step 3: Cross multiply
    22,721.70x = 34,085.78 × 7,140.54
  4. Step 4: Simplify right side
    22,721.70x = 243,390,875.52
  5. Step 5: Solve for x
    x = 243,390,875.52/22,721.70
  6. Step 6: Final answer
    x = 10,711.83

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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.