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Finding the Fourth Proportional to 39,423, 59,134.26 and 11,343.72

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Solution

The fourth proportional to 39,423, 59,134.26 and 11,343.72 is: 17,015.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,423 : 59,134.26 = 11,343.72 : x
  2. Step 2: Convert to fraction form
    39,423/59,134.26 = 11,343.72/x
  3. Step 3: Cross multiply
    39,423x = 59,134.26 × 11,343.72
  4. Step 4: Simplify right side
    39,423x = 670,802,487.85
  5. Step 5: Solve for x
    x = 670,802,487.85/39,423
  6. Step 6: Final answer
    x = 17,015.51

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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.