Home / 21,261,465.72-31,866,288.98-11,020,679.66

Finding the Fourth Proportional to 21,261,465.72, 31,866,288.98 and 11,020,679.66

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Solution

The fourth proportional to 21,261,465.72, 31,866,288.98 and 11,020,679.66 is: 16,517,589.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261,465.72 : 31,866,288.98 = 11,020,679.66 : x
  2. Step 2: Convert to fraction form
    21,261,465.72/31,866,288.98 = 11,020,679.66/x
  3. Step 3: Cross multiply
    21,261,465.72x = 31,866,288.98 × 11,020,679.66
  4. Step 4: Simplify right side
    21,261,465.72x = 351,188,162,801,568.19
  5. Step 5: Solve for x
    x = 351,188,162,801,568.19/21,261,465.72
  6. Step 6: Final answer
    x = 16,517,589.49

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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.