Home / 39,433.68-54,418.56-21,528.69

Finding the Fourth Proportional to 39,433.68, 54,418.56 and 21,528.69

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Solution

The fourth proportional to 39,433.68, 54,418.56 and 21,528.69 is: 29,709.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,433.68 : 54,418.56 = 21,528.69 : x
  2. Step 2: Convert to fraction form
    39,433.68/54,418.56 = 21,528.69/x
  3. Step 3: Cross multiply
    39,433.68x = 54,418.56 × 21,528.69
  4. Step 4: Simplify right side
    39,433.68x = 1,171,560,308.49
  5. Step 5: Solve for x
    x = 1,171,560,308.49/39,433.68
  6. Step 6: Final answer
    x = 29,709.64

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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.