Home / 13,083,639.80-19,625,459.70-7,981,806.20

Finding the Fourth Proportional to 13,083,639.80, 19,625,459.70 and 7,981,806.20

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Solution

The fourth proportional to 13,083,639.80, 19,625,459.70 and 7,981,806.20 is: 11,972,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,083,639.80 : 19,625,459.70 = 7,981,806.20 : x
  2. Step 2: Convert to fraction form
    13,083,639.80/19,625,459.70 = 7,981,806.20/x
  3. Step 3: Cross multiply
    13,083,639.80x = 19,625,459.70 × 7,981,806.20
  4. Step 4: Simplify right side
    13,083,639.80x = 156,646,615,911,310.12
  5. Step 5: Solve for x
    x = 156,646,615,911,310.12/13,083,639.80
  6. Step 6: Final answer
    x = 11,972,709.30

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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.