Home / 15,519.12-21,276.96-15,238.80

Finding the Fourth Proportional to 15,519.12, 21,276.96 and 15,238.80

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Solution

The fourth proportional to 15,519.12, 21,276.96 and 15,238.80 is: 20,892.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.12 : 21,276.96 = 15,238.80 : x
  2. Step 2: Convert to fraction form
    15,519.12/21,276.96 = 15,238.80/x
  3. Step 3: Cross multiply
    15,519.12x = 21,276.96 × 15,238.80
  4. Step 4: Simplify right side
    15,519.12x = 324,235,338.05
  5. Step 5: Solve for x
    x = 324,235,338.05/15,519.12
  6. Step 6: Final answer
    x = 20,892.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.