Home / 21,751.66-30,017.26-12,191.61

Finding the Fourth Proportional to 21,751.66, 30,017.26 and 12,191.61

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Solution

The fourth proportional to 21,751.66, 30,017.26 and 12,191.61 is: 16,824.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.66 : 30,017.26 = 12,191.61 : x
  2. Step 2: Convert to fraction form
    21,751.66/30,017.26 = 12,191.61/x
  3. Step 3: Cross multiply
    21,751.66x = 30,017.26 × 12,191.61
  4. Step 4: Simplify right side
    21,751.66x = 365,958,727.19
  5. Step 5: Solve for x
    x = 365,958,727.19/21,751.66
  6. Step 6: Final answer
    x = 16,824.40

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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.