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Finding the Fourth Proportional to 10,259.67, 15,384 and 5,317.05

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Solution

The fourth proportional to 10,259.67, 15,384 and 5,317.05 is: 7,972.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,259.67 : 15,384 = 5,317.05 : x
  2. Step 2: Convert to fraction form
    10,259.67/15,384 = 5,317.05/x
  3. Step 3: Cross multiply
    10,259.67x = 15,384 × 5,317.05
  4. Step 4: Simplify right side
    10,259.67x = 81,797,497.20
  5. Step 5: Solve for x
    x = 81,797,497.20/10,259.67
  6. Step 6: Final answer
    x = 7,972.72

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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.