Home / 28,366.45-39,146.01-15,791.20

Finding the Fourth Proportional to 28,366.45, 39,146.01 and 15,791.20

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Solution

The fourth proportional to 28,366.45, 39,146.01 and 15,791.20 is: 21,792.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,366.45 : 39,146.01 = 15,791.20 : x
  2. Step 2: Convert to fraction form
    28,366.45/39,146.01 = 15,791.20/x
  3. Step 3: Cross multiply
    28,366.45x = 39,146.01 × 15,791.20
  4. Step 4: Simplify right side
    28,366.45x = 618,162,473.11
  5. Step 5: Solve for x
    x = 618,162,473.11/28,366.45
  6. Step 6: Final answer
    x = 21,792.03

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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.