Home / 9,438.40-14,125.20-8,660.80

Finding the Fourth Proportional to 9,438.40, 14,125.20 and 8,660.80

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Solution

The fourth proportional to 9,438.40, 14,125.20 and 8,660.80 is: 12,961.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,438.40 : 14,125.20 = 8,660.80 : x
  2. Step 2: Convert to fraction form
    9,438.40/14,125.20 = 8,660.80/x
  3. Step 3: Cross multiply
    9,438.40x = 14,125.20 × 8,660.80
  4. Step 4: Simplify right side
    9,438.40x = 122,335,532.16
  5. Step 5: Solve for x
    x = 122,335,532.16/9,438.40
  6. Step 6: Final answer
    x = 12,961.47

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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.