Home / 21,050.68-31,554.06-8,565.70

Finding the Fourth Proportional to 21,050.68, 31,554.06 and 8,565.70

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Solution

The fourth proportional to 21,050.68, 31,554.06 and 8,565.70 is: 12,839.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,050.68 : 31,554.06 = 8,565.70 : x
  2. Step 2: Convert to fraction form
    21,050.68/31,554.06 = 8,565.70/x
  3. Step 3: Cross multiply
    21,050.68x = 31,554.06 × 8,565.70
  4. Step 4: Simplify right side
    21,050.68x = 270,282,611.74
  5. Step 5: Solve for x
    x = 270,282,611.74/21,050.68
  6. Step 6: Final answer
    x = 12,839.61

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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.