Home / 10,778.80-16,168.20-9,223.60

Finding the Fourth Proportional to 10,778.80, 16,168.20 and 9,223.60

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Solution

The fourth proportional to 10,778.80, 16,168.20 and 9,223.60 is: 13,835.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,778.80 : 16,168.20 = 9,223.60 : x
  2. Step 2: Convert to fraction form
    10,778.80/16,168.20 = 9,223.60/x
  3. Step 3: Cross multiply
    10,778.80x = 16,168.20 × 9,223.60
  4. Step 4: Simplify right side
    10,778.80x = 149,129,009.52
  5. Step 5: Solve for x
    x = 149,129,009.52/10,778.80
  6. Step 6: Final answer
    x = 13,835.40

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Similar ratio
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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.