Home / 12,278.55-18,418.01-3,513.48

Finding the Fourth Proportional to 12,278.55, 18,418.01 and 3,513.48

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Solution

The fourth proportional to 12,278.55, 18,418.01 and 3,513.48 is: 5,270.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.55 : 18,418.01 = 3,513.48 : x
  2. Step 2: Convert to fraction form
    12,278.55/18,418.01 = 3,513.48/x
  3. Step 3: Cross multiply
    12,278.55x = 18,418.01 × 3,513.48
  4. Step 4: Simplify right side
    12,278.55x = 64,711,223.14
  5. Step 5: Solve for x
    x = 64,711,223.14/12,278.55
  6. Step 6: Final answer
    x = 5,270.26

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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.