Home / 20,733.31-28,616.61-13,178.17

Finding the Fourth Proportional to 20,733.31, 28,616.61 and 13,178.17

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Solution

The fourth proportional to 20,733.31, 28,616.61 and 13,178.17 is: 18,188.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733.31 : 28,616.61 = 13,178.17 : x
  2. Step 2: Convert to fraction form
    20,733.31/28,616.61 = 13,178.17/x
  3. Step 3: Cross multiply
    20,733.31x = 28,616.61 × 13,178.17
  4. Step 4: Simplify right side
    20,733.31x = 377,114,551.40
  5. Step 5: Solve for x
    x = 377,114,551.40/20,733.31
  6. Step 6: Final answer
    x = 18,188.83

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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.