Home / 18,983.52-28,447.59-13,433.85

Finding the Fourth Proportional to 18,983.52, 28,447.59 and 13,433.85

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Solution

The fourth proportional to 18,983.52, 28,447.59 and 13,433.85 is: 20,131.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,983.52 : 28,447.59 = 13,433.85 : x
  2. Step 2: Convert to fraction form
    18,983.52/28,447.59 = 13,433.85/x
  3. Step 3: Cross multiply
    18,983.52x = 28,447.59 × 13,433.85
  4. Step 4: Simplify right side
    18,983.52x = 382,160,656.92
  5. Step 5: Solve for x
    x = 382,160,656.92/18,983.52
  6. Step 6: Final answer
    x = 20,131.18

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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.