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Finding the Fourth Proportional to 18,859.44, 28,246.10 and 9,005.66

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Solution

The fourth proportional to 18,859.44, 28,246.10 and 9,005.66 is: 13,487.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,859.44 : 28,246.10 = 9,005.66 : x
  2. Step 2: Convert to fraction form
    18,859.44/28,246.10 = 9,005.66/x
  3. Step 3: Cross multiply
    18,859.44x = 28,246.10 × 9,005.66
  4. Step 4: Simplify right side
    18,859.44x = 254,374,772.93
  5. Step 5: Solve for x
    x = 254,374,772.93/18,859.44
  6. Step 6: Final answer
    x = 13,487.93

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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.