Home / 21,287,789.79-31,951,872.33-13,176,228.66

Finding the Fourth Proportional to 21,287,789.79, 31,951,872.33 and 13,176,228.66

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Solution

The fourth proportional to 21,287,789.79, 31,951,872.33 and 13,176,228.66 is: 19,776,838.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287,789.79 : 31,951,872.33 = 13,176,228.66 : x
  2. Step 2: Convert to fraction form
    21,287,789.79/31,951,872.33 = 13,176,228.66/x
  3. Step 3: Cross multiply
    21,287,789.79x = 31,951,872.33 × 13,176,228.66
  4. Step 4: Simplify right side
    21,287,789.79x = 421,005,175,935,206.94
  5. Step 5: Solve for x
    x = 421,005,175,935,206.94/21,287,789.79
  6. Step 6: Final answer
    x = 19,776,838.28

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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.