Home / 22,721.79-34,088.07-7,139.43

Finding the Fourth Proportional to 22,721.79, 34,088.07 and 7,139.43

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Solution

The fourth proportional to 22,721.79, 34,088.07 and 7,139.43 is: 10,710.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.79 : 34,088.07 = 7,139.43 : x
  2. Step 2: Convert to fraction form
    22,721.79/34,088.07 = 7,139.43/x
  3. Step 3: Cross multiply
    22,721.79x = 34,088.07 × 7,139.43
  4. Step 4: Simplify right side
    22,721.79x = 243,369,389.60
  5. Step 5: Solve for x
    x = 243,369,389.60/22,721.79
  6. Step 6: Final answer
    x = 10,710.84

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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.