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Finding the Fourth Proportional to 18,833.70, 28,250.70 and 7,589.18

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Solution

The fourth proportional to 18,833.70, 28,250.70 and 7,589.18 is: 11,383.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,833.70 : 28,250.70 = 7,589.18 : x
  2. Step 2: Convert to fraction form
    18,833.70/28,250.70 = 7,589.18/x
  3. Step 3: Cross multiply
    18,833.70x = 28,250.70 × 7,589.18
  4. Step 4: Simplify right side
    18,833.70x = 214,399,506.17
  5. Step 5: Solve for x
    x = 214,399,506.17/18,833.70
  6. Step 6: Final answer
    x = 11,383.82

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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.