Home / 19,138.97-28,713.32-5,991.45

Finding the Fourth Proportional to 19,138.97, 28,713.32 and 5,991.45

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Solution

The fourth proportional to 19,138.97, 28,713.32 and 5,991.45 is: 8,988.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.97 : 28,713.32 = 5,991.45 : x
  2. Step 2: Convert to fraction form
    19,138.97/28,713.32 = 5,991.45/x
  3. Step 3: Cross multiply
    19,138.97x = 28,713.32 × 5,991.45
  4. Step 4: Simplify right side
    19,138.97x = 172,034,391.16
  5. Step 5: Solve for x
    x = 172,034,391.16/19,138.97
  6. Step 6: Final answer
    x = 8,988.70

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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.