Home / 28,972,763.80-39,982,402.78-15,920,864.44

Finding the Fourth Proportional to 28,972,763.80, 39,982,402.78 and 15,920,864.44

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Solution

The fourth proportional to 28,972,763.80, 39,982,402.78 and 15,920,864.44 is: 21,970,786.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,972,763.80 : 39,982,402.78 = 15,920,864.44 : x
  2. Step 2: Convert to fraction form
    28,972,763.80/39,982,402.78 = 15,920,864.44/x
  3. Step 3: Cross multiply
    28,972,763.80x = 39,982,402.78 × 15,920,864.44
  4. Step 4: Simplify right side
    28,972,763.80x = 636,554,414,506,101
  5. Step 5: Solve for x
    x = 636,554,414,506,101/28,972,763.80
  6. Step 6: Final answer
    x = 21,970,786.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.