Home / 25,765.20-38,691.86-15,828.20

Finding the Fourth Proportional to 25,765.20, 38,691.86 and 15,828.20

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Solution

The fourth proportional to 25,765.20, 38,691.86 and 15,828.20 is: 23,769.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,765.20 : 38,691.86 = 15,828.20 : x
  2. Step 2: Convert to fraction form
    25,765.20/38,691.86 = 15,828.20/x
  3. Step 3: Cross multiply
    25,765.20x = 38,691.86 × 15,828.20
  4. Step 4: Simplify right side
    25,765.20x = 612,422,498.45
  5. Step 5: Solve for x
    x = 612,422,498.45/25,765.20
  6. Step 6: Final answer
    x = 23,769.37

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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.