Home / 25,660.80-38,466.90-8,121.06

Finding the Fourth Proportional to 25,660.80, 38,466.90 and 8,121.06

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Solution

The fourth proportional to 25,660.80, 38,466.90 and 8,121.06 is: 12,173.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,660.80 : 38,466.90 = 8,121.06 : x
  2. Step 2: Convert to fraction form
    25,660.80/38,466.90 = 8,121.06/x
  3. Step 3: Cross multiply
    25,660.80x = 38,466.90 × 8,121.06
  4. Step 4: Simplify right side
    25,660.80x = 312,392,002.91
  5. Step 5: Solve for x
    x = 312,392,002.91/25,660.80
  6. Step 6: Final answer
    x = 12,173.90

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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.