Home / 21,312,359.41-31,960,604.40-7,661,780.68

Finding the Fourth Proportional to 21,312,359.41, 31,960,604.40 and 7,661,780.68

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Solution

The fourth proportional to 21,312,359.41, 31,960,604.40 and 7,661,780.68 is: 11,489,818.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312,359.41 : 31,960,604.40 = 7,661,780.68 : x
  2. Step 2: Convert to fraction form
    21,312,359.41/31,960,604.40 = 7,661,780.68/x
  3. Step 3: Cross multiply
    21,312,359.41x = 31,960,604.40 × 7,661,780.68
  4. Step 4: Simplify right side
    21,312,359.41x = 244,875,141,313,042.97
  5. Step 5: Solve for x
    x = 244,875,141,313,042.97/21,312,359.41
  6. Step 6: Final answer
    x = 11,489,818.49

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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.