Home / 28,527.38-39,366.97-15,781.22

Finding the Fourth Proportional to 28,527.38, 39,366.97 and 15,781.22

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Solution

The fourth proportional to 28,527.38, 39,366.97 and 15,781.22 is: 21,777.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,527.38 : 39,366.97 = 15,781.22 : x
  2. Step 2: Convert to fraction form
    28,527.38/39,366.97 = 15,781.22/x
  3. Step 3: Cross multiply
    28,527.38x = 39,366.97 × 15,781.22
  4. Step 4: Simplify right side
    28,527.38x = 621,258,814.30
  5. Step 5: Solve for x
    x = 621,258,814.30/28,527.38
  6. Step 6: Final answer
    x = 21,777.63

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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.