Home / 18,879.38-28,325.24-5,731.76

Finding the Fourth Proportional to 18,879.38, 28,325.24 and 5,731.76

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Solution

The fourth proportional to 18,879.38, 28,325.24 and 5,731.76 is: 8,599.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.38 : 28,325.24 = 5,731.76 : x
  2. Step 2: Convert to fraction form
    18,879.38/28,325.24 = 5,731.76/x
  3. Step 3: Cross multiply
    18,879.38x = 28,325.24 × 5,731.76
  4. Step 4: Simplify right side
    18,879.38x = 162,353,307.34
  5. Step 5: Solve for x
    x = 162,353,307.34/18,879.38
  6. Step 6: Final answer
    x = 8,599.51

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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.