Home / 18,916.20-28,374.30-5,768.55

Finding the Fourth Proportional to 18,916.20, 28,374.30 and 5,768.55

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Solution

The fourth proportional to 18,916.20, 28,374.30 and 5,768.55 is: 8,652.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,916.20 : 28,374.30 = 5,768.55 : x
  2. Step 2: Convert to fraction form
    18,916.20/28,374.30 = 5,768.55/x
  3. Step 3: Cross multiply
    18,916.20x = 28,374.30 × 5,768.55
  4. Step 4: Simplify right side
    18,916.20x = 163,678,568.27
  5. Step 5: Solve for x
    x = 163,678,568.27/18,916.20
  6. Step 6: Final answer
    x = 8,652.83

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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.