Home / 25,221.91-34,789.57-15,774.07

Finding the Fourth Proportional to 25,221.91, 34,789.57 and 15,774.07

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Solution

The fourth proportional to 25,221.91, 34,789.57 and 15,774.07 is: 21,757.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,221.91 : 34,789.57 = 15,774.07 : x
  2. Step 2: Convert to fraction form
    25,221.91/34,789.57 = 15,774.07/x
  3. Step 3: Cross multiply
    25,221.91x = 34,789.57 × 15,774.07
  4. Step 4: Simplify right side
    25,221.91x = 548,773,219.14
  5. Step 5: Solve for x
    x = 548,773,219.14/25,221.91
  6. Step 6: Final answer
    x = 21,757.80

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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.