Home / 39,344.64-54,293.36-21,438.78

Finding the Fourth Proportional to 39,344.64, 54,293.36 and 21,438.78

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Solution

The fourth proportional to 39,344.64, 54,293.36 and 21,438.78 is: 29,584.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,344.64 : 54,293.36 = 21,438.78 : x
  2. Step 2: Convert to fraction form
    39,344.64/54,293.36 = 21,438.78/x
  3. Step 3: Cross multiply
    39,344.64x = 54,293.36 × 21,438.78
  4. Step 4: Simplify right side
    39,344.64x = 1,163,983,400.50
  5. Step 5: Solve for x
    x = 1,163,983,400.50/39,344.64
  6. Step 6: Final answer
    x = 29,584.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.