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Finding the Fourth Proportional to 18,867.82, 28,301.70 and 5,016.82

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Solution

The fourth proportional to 18,867.82, 28,301.70 and 5,016.82 is: 7,525.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.82 : 28,301.70 = 5,016.82 : x
  2. Step 2: Convert to fraction form
    18,867.82/28,301.70 = 5,016.82/x
  3. Step 3: Cross multiply
    18,867.82x = 28,301.70 × 5,016.82
  4. Step 4: Simplify right side
    18,867.82x = 141,984,534.59
  5. Step 5: Solve for x
    x = 141,984,534.59/18,867.82
  6. Step 6: Final answer
    x = 7,525.22

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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.