Home / 12,125,816.40-18,188,724.60-7,331,037.60

Finding the Fourth Proportional to 12,125,816.40, 18,188,724.60 and 7,331,037.60

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Solution

The fourth proportional to 12,125,816.40, 18,188,724.60 and 7,331,037.60 is: 10,996,556.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125,816.40 : 18,188,724.60 = 7,331,037.60 : x
  2. Step 2: Convert to fraction form
    12,125,816.40/18,188,724.60 = 7,331,037.60/x
  3. Step 3: Cross multiply
    12,125,816.40x = 18,188,724.60 × 7,331,037.60
  4. Step 4: Simplify right side
    12,125,816.40x = 133,342,223,938,644.97
  5. Step 5: Solve for x
    x = 133,342,223,938,644.97/12,125,816.40
  6. Step 6: Final answer
    x = 10,996,556.40

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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.