Home / 18,881.28-28,305.52-11,073.68

Finding the Fourth Proportional to 18,881.28, 28,305.52 and 11,073.68

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Solution

The fourth proportional to 18,881.28, 28,305.52 and 11,073.68 is: 16,600.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,881.28 : 28,305.52 = 11,073.68 : x
  2. Step 2: Convert to fraction form
    18,881.28/28,305.52 = 11,073.68/x
  3. Step 3: Cross multiply
    18,881.28x = 28,305.52 × 11,073.68
  4. Step 4: Simplify right side
    18,881.28x = 313,446,270.71
  5. Step 5: Solve for x
    x = 313,446,270.71/18,881.28
  6. Step 6: Final answer
    x = 16,600.90

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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.