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Finding the Fourth Proportional to 22,005.90, 30,370.23 and 12,572.64

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Solution

The fourth proportional to 22,005.90, 30,370.23 and 12,572.64 is: 17,351.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,005.90 : 30,370.23 = 12,572.64 : x
  2. Step 2: Convert to fraction form
    22,005.90/30,370.23 = 12,572.64/x
  3. Step 3: Cross multiply
    22,005.90x = 30,370.23 × 12,572.64
  4. Step 4: Simplify right side
    22,005.90x = 381,833,968.51
  5. Step 5: Solve for x
    x = 381,833,968.51/22,005.90
  6. Step 6: Final answer
    x = 17,351.44

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.