Home / 18,887.28-28,330.82-4,847.28

Finding the Fourth Proportional to 18,887.28, 28,330.82 and 4,847.28

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Solution

The fourth proportional to 18,887.28, 28,330.82 and 4,847.28 is: 7,270.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.28 : 28,330.82 = 4,847.28 : x
  2. Step 2: Convert to fraction form
    18,887.28/28,330.82 = 4,847.28/x
  3. Step 3: Cross multiply
    18,887.28x = 28,330.82 × 4,847.28
  4. Step 4: Simplify right side
    18,887.28x = 137,327,392.93
  5. Step 5: Solve for x
    x = 137,327,392.93/18,887.28
  6. Step 6: Final answer
    x = 7,270.89

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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.