Home / 19,975.12-27,540.84-15,251.92

Finding the Fourth Proportional to 19,975.12, 27,540.84 and 15,251.92

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Solution

The fourth proportional to 19,975.12, 27,540.84 and 15,251.92 is: 21,028.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,975.12 : 27,540.84 = 15,251.92 : x
  2. Step 2: Convert to fraction form
    19,975.12/27,540.84 = 15,251.92/x
  3. Step 3: Cross multiply
    19,975.12x = 27,540.84 × 15,251.92
  4. Step 4: Simplify right side
    19,975.12x = 420,050,688.41
  5. Step 5: Solve for x
    x = 420,050,688.41/19,975.12
  6. Step 6: Final answer
    x = 21,028.69

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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.