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Finding the Fourth Proportional to 14,008.56, 19,330.65 and 7,720.92

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Solution

The fourth proportional to 14,008.56, 19,330.65 and 7,720.92 is: 10,654.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,008.56 : 19,330.65 = 7,720.92 : x
  2. Step 2: Convert to fraction form
    14,008.56/19,330.65 = 7,720.92/x
  3. Step 3: Cross multiply
    14,008.56x = 19,330.65 × 7,720.92
  4. Step 4: Simplify right side
    14,008.56x = 149,250,402.20
  5. Step 5: Solve for x
    x = 149,250,402.20/14,008.56
  6. Step 6: Final answer
    x = 10,654.23

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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.