Home / 20,770.43-28,663.35-11,339.24

Finding the Fourth Proportional to 20,770.43, 28,663.35 and 11,339.24

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Solution

The fourth proportional to 20,770.43, 28,663.35 and 11,339.24 is: 15,648.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.43 : 28,663.35 = 11,339.24 : x
  2. Step 2: Convert to fraction form
    20,770.43/28,663.35 = 11,339.24/x
  3. Step 3: Cross multiply
    20,770.43x = 28,663.35 × 11,339.24
  4. Step 4: Simplify right side
    20,770.43x = 325,020,604.85
  5. Step 5: Solve for x
    x = 325,020,604.85/20,770.43
  6. Step 6: Final answer
    x = 15,648.24

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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.