Home / 21,186,263.80-31,789,169.31-9,675,259.79

Finding the Fourth Proportional to 21,186,263.80, 31,789,169.31 and 9,675,259.79

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Solution

The fourth proportional to 21,186,263.80, 31,789,169.31 and 9,675,259.79 is: 14,517,353.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186,263.80 : 31,789,169.31 = 9,675,259.79 : x
  2. Step 2: Convert to fraction form
    21,186,263.80/31,789,169.31 = 9,675,259.79/x
  3. Step 3: Cross multiply
    21,186,263.80x = 31,789,169.31 × 9,675,259.79
  4. Step 4: Simplify right side
    21,186,263.80x = 307,568,471,554,902.69
  5. Step 5: Solve for x
    x = 307,568,471,554,902.69/21,186,263.80
  6. Step 6: Final answer
    x = 14,517,353.06

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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.