Home / 39,039.21-53,874.10-21,134.21

Finding the Fourth Proportional to 39,039.21, 53,874.10 and 21,134.21

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Solution

The fourth proportional to 39,039.21, 53,874.10 and 21,134.21 is: 29,165.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,039.21 : 53,874.10 = 21,134.21 : x
  2. Step 2: Convert to fraction form
    39,039.21/53,874.10 = 21,134.21/x
  3. Step 3: Cross multiply
    39,039.21x = 53,874.10 × 21,134.21
  4. Step 4: Simplify right side
    39,039.21x = 1,138,586,542.96
  5. Step 5: Solve for x
    x = 1,138,586,542.96/39,039.21
  6. Step 6: Final answer
    x = 29,165.20

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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.