Home / 12,278.78-18,402.68-5,250.48

Finding the Fourth Proportional to 12,278.78, 18,402.68 and 5,250.48

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Solution

The fourth proportional to 12,278.78, 18,402.68 and 5,250.48 is: 7,869.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.78 : 18,402.68 = 5,250.48 : x
  2. Step 2: Convert to fraction form
    12,278.78/18,402.68 = 5,250.48/x
  3. Step 3: Cross multiply
    12,278.78x = 18,402.68 × 5,250.48
  4. Step 4: Simplify right side
    12,278.78x = 96,622,877.03
  5. Step 5: Solve for x
    x = 96,622,877.03/12,278.78
  6. Step 6: Final answer
    x = 7,869.10

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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.