Home / 20,581.81-30,869.13-5,787.22

Finding the Fourth Proportional to 20,581.81, 30,869.13 and 5,787.22

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Solution

The fourth proportional to 20,581.81, 30,869.13 and 5,787.22 is: 8,679.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.81 : 30,869.13 = 5,787.22 : x
  2. Step 2: Convert to fraction form
    20,581.81/30,869.13 = 5,787.22/x
  3. Step 3: Cross multiply
    20,581.81x = 30,869.13 × 5,787.22
  4. Step 4: Simplify right side
    20,581.81x = 178,646,446.52
  5. Step 5: Solve for x
    x = 178,646,446.52/20,581.81
  6. Step 6: Final answer
    x = 8,679.82

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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.