Home / 21,261,456.80-31,866,275.62-11,020,670.74

Finding the Fourth Proportional to 21,261,456.80, 31,866,275.62 and 11,020,670.74

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Solution

The fourth proportional to 21,261,456.80, 31,866,275.62 and 11,020,670.74 is: 16,517,576.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261,456.80 : 31,866,275.62 = 11,020,670.74 : x
  2. Step 2: Convert to fraction form
    21,261,456.80/31,866,275.62 = 11,020,670.74/x
  3. Step 3: Cross multiply
    21,261,456.80x = 31,866,275.62 × 11,020,670.74
  4. Step 4: Simplify right side
    21,261,456.80x = 351,187,731,318,109.38
  5. Step 5: Solve for x
    x = 351,187,731,318,109.38/21,261,456.80
  6. Step 6: Final answer
    x = 16,517,576.13

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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.