Home / 31,187,427.46-43,021,370.82-18,133,243.18

Finding the Fourth Proportional to 31,187,427.46, 43,021,370.82 and 18,133,243.18

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Solution

The fourth proportional to 31,187,427.46, 43,021,370.82 and 18,133,243.18 is: 25,013,829.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,187,427.46 : 43,021,370.82 = 18,133,243.18 : x
  2. Step 2: Convert to fraction form
    31,187,427.46/43,021,370.82 = 18,133,243.18/x
  3. Step 3: Cross multiply
    31,187,427.46x = 43,021,370.82 × 18,133,243.18
  4. Step 4: Simplify right side
    31,187,427.46x = 780,116,979,016,016
  5. Step 5: Solve for x
    x = 780,116,979,016,016/31,187,427.46
  6. Step 6: Final answer
    x = 25,013,829.05

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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.