Home / 21,756.12-32,612.18-8,617.65

Finding the Fourth Proportional to 21,756.12, 32,612.18 and 8,617.65

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Solution

The fourth proportional to 21,756.12, 32,612.18 and 8,617.65 is: 12,917.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.12 : 32,612.18 = 8,617.65 : x
  2. Step 2: Convert to fraction form
    21,756.12/32,612.18 = 8,617.65/x
  3. Step 3: Cross multiply
    21,756.12x = 32,612.18 × 8,617.65
  4. Step 4: Simplify right side
    21,756.12x = 281,040,309.89
  5. Step 5: Solve for x
    x = 281,040,309.89/21,756.12
  6. Step 6: Final answer
    x = 12,917.76

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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.