Home / 39,026.28-53,856.26-21,121.42

Finding the Fourth Proportional to 39,026.28, 53,856.26 and 21,121.42

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Solution

The fourth proportional to 39,026.28, 53,856.26 and 21,121.42 is: 29,147.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,026.28 : 53,856.26 = 21,121.42 : x
  2. Step 2: Convert to fraction form
    39,026.28/53,856.26 = 21,121.42/x
  3. Step 3: Cross multiply
    39,026.28x = 53,856.26 × 21,121.42
  4. Step 4: Simplify right side
    39,026.28x = 1,137,520,687.09
  5. Step 5: Solve for x
    x = 1,137,520,687.09/39,026.28
  6. Step 6: Final answer
    x = 29,147.56

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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.