Home / 9,778.40-14,635.20-9,000.80

Finding the Fourth Proportional to 9,778.40, 14,635.20 and 9,000.80

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Solution

The fourth proportional to 9,778.40, 14,635.20 and 9,000.80 is: 13,471.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,778.40 : 14,635.20 = 9,000.80 : x
  2. Step 2: Convert to fraction form
    9,778.40/14,635.20 = 9,000.80/x
  3. Step 3: Cross multiply
    9,778.40x = 14,635.20 × 9,000.80
  4. Step 4: Simplify right side
    9,778.40x = 131,728,508.16
  5. Step 5: Solve for x
    x = 131,728,508.16/9,778.40
  6. Step 6: Final answer
    x = 13,471.38

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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.