Home / 12,358,910.70-18,538,366.05-7,307,621.10

Finding the Fourth Proportional to 12,358,910.70, 18,538,366.05 and 7,307,621.10

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Solution

The fourth proportional to 12,358,910.70, 18,538,366.05 and 7,307,621.10 is: 10,961,431.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,358,910.70 : 18,538,366.05 = 7,307,621.10 : x
  2. Step 2: Convert to fraction form
    12,358,910.70/18,538,366.05 = 7,307,621.10/x
  3. Step 3: Cross multiply
    12,358,910.70x = 18,538,366.05 × 7,307,621.10
  4. Step 4: Simplify right side
    12,358,910.70x = 135,471,354,906,503.66
  5. Step 5: Solve for x
    x = 135,471,354,906,503.66/12,358,910.70
  6. Step 6: Final answer
    x = 10,961,431.65

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Double scale
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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.