Home / 12,541.78-18,819.96-5,151.55

Finding the Fourth Proportional to 12,541.78, 18,819.96 and 5,151.55

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Solution

The fourth proportional to 12,541.78, 18,819.96 and 5,151.55 is: 7,730.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,541.78 : 18,819.96 = 5,151.55 : x
  2. Step 2: Convert to fraction form
    12,541.78/18,819.96 = 5,151.55/x
  3. Step 3: Cross multiply
    12,541.78x = 18,819.96 × 5,151.55
  4. Step 4: Simplify right side
    12,541.78x = 96,951,964.94
  5. Step 5: Solve for x
    x = 96,951,964.94/12,541.78
  6. Step 6: Final answer
    x = 7,730.32

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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.