Home / 39,433.55-54,419.42-21,529.69

Finding the Fourth Proportional to 39,433.55, 54,419.42 and 21,529.69

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Solution

The fourth proportional to 39,433.55, 54,419.42 and 21,529.69 is: 29,711.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,433.55 : 54,419.42 = 21,529.69 : x
  2. Step 2: Convert to fraction form
    39,433.55/54,419.42 = 21,529.69/x
  3. Step 3: Cross multiply
    39,433.55x = 54,419.42 × 21,529.69
  4. Step 4: Simplify right side
    39,433.55x = 1,171,633,160.36
  5. Step 5: Solve for x
    x = 1,171,633,160.36/39,433.55
  6. Step 6: Final answer
    x = 29,711.59

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1.5x scale

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.