Home / 12,313,008.40-18,469,512.60-7,778,045.20

Finding the Fourth Proportional to 12,313,008.40, 18,469,512.60 and 7,778,045.20

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Solution

The fourth proportional to 12,313,008.40, 18,469,512.60 and 7,778,045.20 is: 11,667,067.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313,008.40 : 18,469,512.60 = 7,778,045.20 : x
  2. Step 2: Convert to fraction form
    12,313,008.40/18,469,512.60 = 7,778,045.20/x
  3. Step 3: Cross multiply
    12,313,008.40x = 18,469,512.60 × 7,778,045.20
  4. Step 4: Simplify right side
    12,313,008.40x = 143,656,703,824,769.53
  5. Step 5: Solve for x
    x = 143,656,703,824,769.53/12,313,008.40
  6. Step 6: Final answer
    x = 11,667,067.80

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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.