Home / 25,704.20-38,520.30-20,448.20

Finding the Fourth Proportional to 25,704.20, 38,520.30 and 20,448.20

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Solution

The fourth proportional to 25,704.20, 38,520.30 and 20,448.20 is: 30,643.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,704.20 : 38,520.30 = 20,448.20 : x
  2. Step 2: Convert to fraction form
    25,704.20/38,520.30 = 20,448.20/x
  3. Step 3: Cross multiply
    25,704.20x = 38,520.30 × 20,448.20
  4. Step 4: Simplify right side
    25,704.20x = 787,670,798.46
  5. Step 5: Solve for x
    x = 787,670,798.46/25,704.20
  6. Step 6: Final answer
    x = 30,643.66

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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.