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Finding the Fourth Proportional to 18,590.06, 27,870.51 and 8,724.26

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Solution

The fourth proportional to 18,590.06, 27,870.51 and 8,724.26 is: 13,079.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,590.06 : 27,870.51 = 8,724.26 : x
  2. Step 2: Convert to fraction form
    18,590.06/27,870.51 = 8,724.26/x
  3. Step 3: Cross multiply
    18,590.06x = 27,870.51 × 8,724.26
  4. Step 4: Simplify right side
    18,590.06x = 243,149,575.57
  5. Step 5: Solve for x
    x = 243,149,575.57/18,590.06
  6. Step 6: Final answer
    x = 13,079.55

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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.