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Finding the Fourth Proportional to 43,479.92, 65,230.47 and 13,493.42

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Solution

The fourth proportional to 43,479.92, 65,230.47 and 13,493.42 is: 20,243.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,479.92 : 65,230.47 = 13,493.42 : x
  2. Step 2: Convert to fraction form
    43,479.92/65,230.47 = 13,493.42/x
  3. Step 3: Cross multiply
    43,479.92x = 65,230.47 × 13,493.42
  4. Step 4: Simplify right side
    43,479.92x = 880,182,128.51
  5. Step 5: Solve for x
    x = 880,182,128.51/43,479.92
  6. Step 6: Final answer
    x = 20,243.42

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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.