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Finding the Fourth Proportional to 19,614.78, 29,412.91 and 7,125.99

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Solution

The fourth proportional to 19,614.78, 29,412.91 and 7,125.99 is: 10,685.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,614.78 : 29,412.91 = 7,125.99 : x
  2. Step 2: Convert to fraction form
    19,614.78/29,412.91 = 7,125.99/x
  3. Step 3: Cross multiply
    19,614.78x = 29,412.91 × 7,125.99
  4. Step 4: Simplify right side
    19,614.78x = 209,596,102.53
  5. Step 5: Solve for x
    x = 209,596,102.53/19,614.78
  6. Step 6: Final answer
    x = 10,685.62

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.