Home / 28,890.97-39,868.78-16,144.26

Finding the Fourth Proportional to 28,890.97, 39,868.78 and 16,144.26

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Solution

The fourth proportional to 28,890.97, 39,868.78 and 16,144.26 is: 22,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.97 : 39,868.78 = 16,144.26 : x
  2. Step 2: Convert to fraction form
    28,890.97/39,868.78 = 16,144.26/x
  3. Step 3: Cross multiply
    28,890.97x = 39,868.78 × 16,144.26
  4. Step 4: Simplify right side
    28,890.97x = 643,651,950.20
  5. Step 5: Solve for x
    x = 643,651,950.20/28,890.97
  6. Step 6: Final answer
    x = 22,278.65

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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.