Home / 28,170.28-42,248.22-11,527.21

Finding the Fourth Proportional to 28,170.28, 42,248.22 and 11,527.21

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Solution

The fourth proportional to 28,170.28, 42,248.22 and 11,527.21 is: 17,287.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170.28 : 42,248.22 = 11,527.21 : x
  2. Step 2: Convert to fraction form
    28,170.28/42,248.22 = 11,527.21/x
  3. Step 3: Cross multiply
    28,170.28x = 42,248.22 × 11,527.21
  4. Step 4: Simplify right side
    28,170.28x = 487,004,104.07
  5. Step 5: Solve for x
    x = 487,004,104.07/28,170.28
  6. Step 6: Final answer
    x = 17,287.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.