Home / 18,838.28-28,219.70-11,337.68

Finding the Fourth Proportional to 18,838.28, 28,219.70 and 11,337.68

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Solution

The fourth proportional to 18,838.28, 28,219.70 and 11,337.68 is: 16,983.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838.28 : 28,219.70 = 11,337.68 : x
  2. Step 2: Convert to fraction form
    18,838.28/28,219.70 = 11,337.68/x
  3. Step 3: Cross multiply
    18,838.28x = 28,219.70 × 11,337.68
  4. Step 4: Simplify right side
    18,838.28x = 319,945,928.30
  5. Step 5: Solve for x
    x = 319,945,928.30/18,838.28
  6. Step 6: Final answer
    x = 16,983.82

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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.