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Finding the Fourth Proportional to 18,710.39, 28,066.19 and 9,823.47

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Solution

The fourth proportional to 18,710.39, 28,066.19 and 9,823.47 is: 14,735.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.39 : 28,066.19 = 9,823.47 : x
  2. Step 2: Convert to fraction form
    18,710.39/28,066.19 = 9,823.47/x
  3. Step 3: Cross multiply
    18,710.39x = 28,066.19 × 9,823.47
  4. Step 4: Simplify right side
    18,710.39x = 275,707,375.48
  5. Step 5: Solve for x
    x = 275,707,375.48/18,710.39
  6. Step 6: Final answer
    x = 14,735.52

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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.