Home / 25,620.16-38,454.20-15,778.64

Finding the Fourth Proportional to 25,620.16, 38,454.20 and 15,778.64

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Solution

The fourth proportional to 25,620.16, 38,454.20 and 15,778.64 is: 23,682.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,620.16 : 38,454.20 = 15,778.64 : x
  2. Step 2: Convert to fraction form
    25,620.16/38,454.20 = 15,778.64/x
  3. Step 3: Cross multiply
    25,620.16x = 38,454.20 × 15,778.64
  4. Step 4: Simplify right side
    25,620.16x = 606,754,978.29
  5. Step 5: Solve for x
    x = 606,754,978.29/25,620.16
  6. Step 6: Final answer
    x = 23,682.72

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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.