Home / 20,581.79-30,872.77-5,790.92

Finding the Fourth Proportional to 20,581.79, 30,872.77 and 5,790.92

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Solution

The fourth proportional to 20,581.79, 30,872.77 and 5,790.92 is: 8,686.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.79 : 30,872.77 = 5,790.92 : x
  2. Step 2: Convert to fraction form
    20,581.79/30,872.77 = 5,790.92/x
  3. Step 3: Cross multiply
    20,581.79x = 30,872.77 × 5,790.92
  4. Step 4: Simplify right side
    20,581.79x = 178,781,572.41
  5. Step 5: Solve for x
    x = 178,781,572.41/20,581.79
  6. Step 6: Final answer
    x = 8,686.40

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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.