Home / 12,140,144.80-18,210,217.20-11,148,121.60

Finding the Fourth Proportional to 12,140,144.80, 18,210,217.20 and 11,148,121.60

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Solution

The fourth proportional to 12,140,144.80, 18,210,217.20 and 11,148,121.60 is: 16,722,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140,144.80 : 18,210,217.20 = 11,148,121.60 : x
  2. Step 2: Convert to fraction form
    12,140,144.80/18,210,217.20 = 11,148,121.60/x
  3. Step 3: Cross multiply
    12,140,144.80x = 18,210,217.20 × 11,148,121.60
  4. Step 4: Simplify right side
    12,140,144.80x = 203,009,715,708,011.50
  5. Step 5: Solve for x
    x = 203,009,715,708,011.50/12,140,144.80
  6. Step 6: Final answer
    x = 16,722,182.40

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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.