Home / 18,218.87-25,140.26-13,441.42

Finding the Fourth Proportional to 18,218.87, 25,140.26 and 13,441.42

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Solution

The fourth proportional to 18,218.87, 25,140.26 and 13,441.42 is: 18,547.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.87 : 25,140.26 = 13,441.42 : x
  2. Step 2: Convert to fraction form
    18,218.87/25,140.26 = 13,441.42/x
  3. Step 3: Cross multiply
    18,218.87x = 25,140.26 × 13,441.42
  4. Step 4: Simplify right side
    18,218.87x = 337,920,764.32
  5. Step 5: Solve for x
    x = 337,920,764.32/18,218.87
  6. Step 6: Final answer
    x = 18,547.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.