Home / 20,320.08-28,041.72-11,367.59

Finding the Fourth Proportional to 20,320.08, 28,041.72 and 11,367.59

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Solution

The fourth proportional to 20,320.08, 28,041.72 and 11,367.59 is: 15,687.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.08 : 28,041.72 = 11,367.59 : x
  2. Step 2: Convert to fraction form
    20,320.08/28,041.72 = 11,367.59/x
  3. Step 3: Cross multiply
    20,320.08x = 28,041.72 × 11,367.59
  4. Step 4: Simplify right side
    20,320.08x = 318,766,635.65
  5. Step 5: Solve for x
    x = 318,766,635.65/20,320.08
  6. Step 6: Final answer
    x = 15,687.27

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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.