Home / 25,221.20-34,805.49-13,890.95

Finding the Fourth Proportional to 25,221.20, 34,805.49 and 13,890.95

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Solution

The fourth proportional to 25,221.20, 34,805.49 and 13,890.95 is: 19,169.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,221.20 : 34,805.49 = 13,890.95 : x
  2. Step 2: Convert to fraction form
    25,221.20/34,805.49 = 13,890.95/x
  3. Step 3: Cross multiply
    25,221.20x = 34,805.49 × 13,890.95
  4. Step 4: Simplify right side
    25,221.20x = 483,481,147.29
  5. Step 5: Solve for x
    x = 483,481,147.29/25,221.20
  6. Step 6: Final answer
    x = 19,169.64

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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.