Home / 39,039.95-53,874.49-21,134.80

Finding the Fourth Proportional to 39,039.95, 53,874.49 and 21,134.80

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Solution

The fourth proportional to 39,039.95, 53,874.49 and 21,134.80 is: 29,165.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,039.95 : 53,874.49 = 21,134.80 : x
  2. Step 2: Convert to fraction form
    39,039.95/53,874.49 = 21,134.80/x
  3. Step 3: Cross multiply
    39,039.95x = 53,874.49 × 21,134.80
  4. Step 4: Simplify right side
    39,039.95x = 1,138,626,571.25
  5. Step 5: Solve for x
    x = 1,138,626,571.25/39,039.95
  6. Step 6: Final answer
    x = 29,165.68

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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.