Home / 39,039.42-53,874.36-21,134.43

Finding the Fourth Proportional to 39,039.42, 53,874.36 and 21,134.43

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Solution

The fourth proportional to 39,039.42, 53,874.36 and 21,134.43 is: 29,165.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,039.42 : 53,874.36 = 21,134.43 : x
  2. Step 2: Convert to fraction form
    39,039.42/53,874.36 = 21,134.43/x
  3. Step 3: Cross multiply
    39,039.42x = 53,874.36 × 21,134.43
  4. Step 4: Simplify right side
    39,039.42x = 1,138,603,890.21
  5. Step 5: Solve for x
    x = 1,138,603,890.21/39,039.42
  6. Step 6: Final answer
    x = 29,165.49

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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.