Home / 39,039.28-53,874.14-21,134.28

Finding the Fourth Proportional to 39,039.28, 53,874.14 and 21,134.28

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Solution

The fourth proportional to 39,039.28, 53,874.14 and 21,134.28 is: 29,165.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,039.28 : 53,874.14 = 21,134.28 : x
  2. Step 2: Convert to fraction form
    39,039.28/53,874.14 = 21,134.28/x
  3. Step 3: Cross multiply
    39,039.28x = 53,874.14 × 21,134.28
  4. Step 4: Simplify right side
    39,039.28x = 1,138,591,053.85
  5. Step 5: Solve for x
    x = 1,138,591,053.85/39,039.28
  6. Step 6: Final answer
    x = 29,165.27

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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.