Home / 21,317,680.80-31,976,521.20-19,890,007.20

Finding the Fourth Proportional to 21,317,680.80, 31,976,521.20 and 19,890,007.20

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Solution

The fourth proportional to 21,317,680.80, 31,976,521.20 and 19,890,007.20 is: 29,835,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317,680.80 : 31,976,521.20 = 19,890,007.20 : x
  2. Step 2: Convert to fraction form
    21,317,680.80/31,976,521.20 = 19,890,007.20/x
  3. Step 3: Cross multiply
    21,317,680.80x = 31,976,521.20 × 19,890,007.20
  4. Step 4: Simplify right side
    21,317,680.80x = 636,013,236,898,952.62
  5. Step 5: Solve for x
    x = 636,013,236,898,952.62/21,317,680.80
  6. Step 6: Final answer
    x = 29,835,010.80

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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.