Home / 20,357.20-28,096.68-13,283.56

Finding the Fourth Proportional to 20,357.20, 28,096.68 and 13,283.56

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Solution

The fourth proportional to 20,357.20, 28,096.68 and 13,283.56 is: 18,333.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,357.20 : 28,096.68 = 13,283.56 : x
  2. Step 2: Convert to fraction form
    20,357.20/28,096.68 = 13,283.56/x
  3. Step 3: Cross multiply
    20,357.20x = 28,096.68 × 13,283.56
  4. Step 4: Simplify right side
    20,357.20x = 373,223,934.58
  5. Step 5: Solve for x
    x = 373,223,934.58/20,357.20
  6. Step 6: Final answer
    x = 18,333.76

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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.