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Finding the Fourth Proportional to 15,933.41, 21,988.41 and 8,859.83

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Solution

The fourth proportional to 15,933.41, 21,988.41 and 8,859.83 is: 12,226.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.41 : 21,988.41 = 8,859.83 : x
  2. Step 2: Convert to fraction form
    15,933.41/21,988.41 = 8,859.83/x
  3. Step 3: Cross multiply
    15,933.41x = 21,988.41 × 8,859.83
  4. Step 4: Simplify right side
    15,933.41x = 194,813,604.93
  5. Step 5: Solve for x
    x = 194,813,604.93/15,933.41
  6. Step 6: Final answer
    x = 12,226.74

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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.