Home / 12,768,326.70-19,152,490.05-7,981,421.10

Finding the Fourth Proportional to 12,768,326.70, 19,152,490.05 and 7,981,421.10

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Solution

The fourth proportional to 12,768,326.70, 19,152,490.05 and 7,981,421.10 is: 11,972,131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768,326.70 : 19,152,490.05 = 7,981,421.10 : x
  2. Step 2: Convert to fraction form
    12,768,326.70/19,152,490.05 = 7,981,421.10/x
  3. Step 3: Cross multiply
    12,768,326.70x = 19,152,490.05 × 7,981,421.10
  4. Step 4: Simplify right side
    12,768,326.70x = 152,864,088,202,610.06
  5. Step 5: Solve for x
    x = 152,864,088,202,610.06/12,768,326.70
  6. Step 6: Final answer
    x = 11,972,131.65

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Similar ratio
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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.