Home / 20,834.80-28,751.29-11,885.16

Finding the Fourth Proportional to 20,834.80, 28,751.29 and 11,885.16

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Solution

The fourth proportional to 20,834.80, 28,751.29 and 11,885.16 is: 16,401.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.80 : 28,751.29 = 11,885.16 : x
  2. Step 2: Convert to fraction form
    20,834.80/28,751.29 = 11,885.16/x
  3. Step 3: Cross multiply
    20,834.80x = 28,751.29 × 11,885.16
  4. Step 4: Simplify right side
    20,834.80x = 341,713,759.96
  5. Step 5: Solve for x
    x = 341,713,759.96/20,834.80
  6. Step 6: Final answer
    x = 16,401.11

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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.