Home / 20,834.84-28,753.80-11,882.72

Finding the Fourth Proportional to 20,834.84, 28,753.80 and 11,882.72

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Solution

The fourth proportional to 20,834.84, 28,753.80 and 11,882.72 is: 16,399.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.84 : 28,753.80 = 11,882.72 : x
  2. Step 2: Convert to fraction form
    20,834.84/28,753.80 = 11,882.72/x
  3. Step 3: Cross multiply
    20,834.84x = 28,753.80 × 11,882.72
  4. Step 4: Simplify right side
    20,834.84x = 341,673,354.34
  5. Step 5: Solve for x
    x = 341,673,354.34/20,834.84
  6. Step 6: Final answer
    x = 16,399.14

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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.