Home / 20,320.26-28,043.02-11,367.91

Finding the Fourth Proportional to 20,320.26, 28,043.02 and 11,367.91

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Solution

The fourth proportional to 20,320.26, 28,043.02 and 11,367.91 is: 15,688.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.26 : 28,043.02 = 11,367.91 : x
  2. Step 2: Convert to fraction form
    20,320.26/28,043.02 = 11,367.91/x
  3. Step 3: Cross multiply
    20,320.26x = 28,043.02 × 11,367.91
  4. Step 4: Simplify right side
    20,320.26x = 318,790,527.49
  5. Step 5: Solve for x
    x = 318,790,527.49/20,320.26
  6. Step 6: Final answer
    x = 15,688.31

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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.