Home / 25,790.80-38,686.20-15,422.80

Finding the Fourth Proportional to 25,790.80, 38,686.20 and 15,422.80

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Solution

The fourth proportional to 25,790.80, 38,686.20 and 15,422.80 is: 23,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,790.80 : 38,686.20 = 15,422.80 : x
  2. Step 2: Convert to fraction form
    25,790.80/38,686.20 = 15,422.80/x
  3. Step 3: Cross multiply
    25,790.80x = 38,686.20 × 15,422.80
  4. Step 4: Simplify right side
    25,790.80x = 596,649,525.36
  5. Step 5: Solve for x
    x = 596,649,525.36/25,790.80
  6. Step 6: Final answer
    x = 23,134.20

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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.