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Finding the Fourth Proportional to 18,376.68, 27,565.05 and 6,690.81

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Solution

The fourth proportional to 18,376.68, 27,565.05 and 6,690.81 is: 10,036.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,376.68 : 27,565.05 = 6,690.81 : x
  2. Step 2: Convert to fraction form
    18,376.68/27,565.05 = 6,690.81/x
  3. Step 3: Cross multiply
    18,376.68x = 27,565.05 × 6,690.81
  4. Step 4: Simplify right side
    18,376.68x = 184,432,512.19
  5. Step 5: Solve for x
    x = 184,432,512.19/18,376.68
  6. Step 6: Final answer
    x = 10,036.23

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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.