Home / 21,855.26-32,782.90-8,707.74

Finding the Fourth Proportional to 21,855.26, 32,782.90 and 8,707.74

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Solution

The fourth proportional to 21,855.26, 32,782.90 and 8,707.74 is: 13,061.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,855.26 : 32,782.90 = 8,707.74 : x
  2. Step 2: Convert to fraction form
    21,855.26/32,782.90 = 8,707.74/x
  3. Step 3: Cross multiply
    21,855.26x = 32,782.90 × 8,707.74
  4. Step 4: Simplify right side
    21,855.26x = 285,464,969.65
  5. Step 5: Solve for x
    x = 285,464,969.65/21,855.26
  6. Step 6: Final answer
    x = 13,061.61

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1.5x scale

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.