Home / 20,849.12-28,770.72-11,417.12

Finding the Fourth Proportional to 20,849.12, 28,770.72 and 11,417.12

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Solution

The fourth proportional to 20,849.12, 28,770.72 and 11,417.12 is: 15,755.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.12 : 28,770.72 = 11,417.12 : x
  2. Step 2: Convert to fraction form
    20,849.12/28,770.72 = 11,417.12/x
  3. Step 3: Cross multiply
    20,849.12x = 28,770.72 × 11,417.12
  4. Step 4: Simplify right side
    20,849.12x = 328,478,762.73
  5. Step 5: Solve for x
    x = 328,478,762.73/20,849.12
  6. Step 6: Final answer
    x = 15,755.04

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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.