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Finding the Fourth Proportional to 18,368.78, 27,565.45 and 6,681.99

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Solution

The fourth proportional to 18,368.78, 27,565.45 and 6,681.99 is: 10,027.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,368.78 : 27,565.45 = 6,681.99 : x
  2. Step 2: Convert to fraction form
    18,368.78/27,565.45 = 6,681.99/x
  3. Step 3: Cross multiply
    18,368.78x = 27,565.45 × 6,681.99
  4. Step 4: Simplify right side
    18,368.78x = 184,192,147.91
  5. Step 5: Solve for x
    x = 184,192,147.91/18,368.78
  6. Step 6: Final answer
    x = 10,027.46

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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.