Home / 25,560.78-38,341.20-12,230.63

Finding the Fourth Proportional to 25,560.78, 38,341.20 and 12,230.63

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Solution

The fourth proportional to 25,560.78, 38,341.20 and 12,230.63 is: 18,345.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,560.78 : 38,341.20 = 12,230.63 : x
  2. Step 2: Convert to fraction form
    25,560.78/38,341.20 = 12,230.63/x
  3. Step 3: Cross multiply
    25,560.78x = 38,341.20 × 12,230.63
  4. Step 4: Simplify right side
    25,560.78x = 468,936,960.10
  5. Step 5: Solve for x
    x = 468,936,960.10/25,560.78
  6. Step 6: Final answer
    x = 18,345.96

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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.