Home / 39,834.86-54,972.59-21,931.09

Finding the Fourth Proportional to 39,834.86, 54,972.59 and 21,931.09

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Solution

The fourth proportional to 39,834.86, 54,972.59 and 21,931.09 is: 30,265.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,834.86 : 54,972.59 = 21,931.09 : x
  2. Step 2: Convert to fraction form
    39,834.86/54,972.59 = 21,931.09/x
  3. Step 3: Cross multiply
    39,834.86x = 54,972.59 × 21,931.09
  4. Step 4: Simplify right side
    39,834.86x = 1,205,608,571.74
  5. Step 5: Solve for x
    x = 1,205,608,571.74/39,834.86
  6. Step 6: Final answer
    x = 30,265.17

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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.