Home / 18,839.28-28,268.08-7,749.28

Finding the Fourth Proportional to 18,839.28, 28,268.08 and 7,749.28

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Solution

The fourth proportional to 18,839.28, 28,268.08 and 7,749.28 is: 11,627.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,839.28 : 28,268.08 = 7,749.28 : x
  2. Step 2: Convert to fraction form
    18,839.28/28,268.08 = 7,749.28/x
  3. Step 3: Cross multiply
    18,839.28x = 28,268.08 × 7,749.28
  4. Step 4: Simplify right side
    18,839.28x = 219,057,266.98
  5. Step 5: Solve for x
    x = 219,057,266.98/18,839.28
  6. Step 6: Final answer
    x = 11,627.69

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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.