Home / 12,278.68-18,418.01-3,513.59

Finding the Fourth Proportional to 12,278.68, 18,418.01 and 3,513.59

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Solution

The fourth proportional to 12,278.68, 18,418.01 and 3,513.59 is: 5,270.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.68 : 18,418.01 = 3,513.59 : x
  2. Step 2: Convert to fraction form
    12,278.68/18,418.01 = 3,513.59/x
  3. Step 3: Cross multiply
    12,278.68x = 18,418.01 × 3,513.59
  4. Step 4: Simplify right side
    12,278.68x = 64,713,226.10
  5. Step 5: Solve for x
    x = 64,713,226.10/12,278.68
  6. Step 6: Final answer
    x = 5,270.37

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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.