Home / 21,338.98-29,449.07-11,908.15

Finding the Fourth Proportional to 21,338.98, 29,449.07 and 11,908.15

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Solution

The fourth proportional to 21,338.98, 29,449.07 and 11,908.15 is: 16,433.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.98 : 29,449.07 = 11,908.15 : x
  2. Step 2: Convert to fraction form
    21,338.98/29,449.07 = 11,908.15/x
  3. Step 3: Cross multiply
    21,338.98x = 29,449.07 × 11,908.15
  4. Step 4: Simplify right side
    21,338.98x = 350,683,854.41
  5. Step 5: Solve for x
    x = 350,683,854.41/21,338.98
  6. Step 6: Final answer
    x = 16,433.96

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1.5x scale

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.