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Finding the Fourth Proportional to 15,212.62, 21,007.78 and 14,384.29

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Solution

The fourth proportional to 15,212.62, 21,007.78 and 14,384.29 is: 19,863.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,212.62 : 21,007.78 = 14,384.29 : x
  2. Step 2: Convert to fraction form
    15,212.62/21,007.78 = 14,384.29/x
  3. Step 3: Cross multiply
    15,212.62x = 21,007.78 × 14,384.29
  4. Step 4: Simplify right side
    15,212.62x = 302,181,999.78
  5. Step 5: Solve for x
    x = 302,181,999.78/15,212.62
  6. Step 6: Final answer
    x = 19,863.90

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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.