Home / 39,709.93-54,793.78-21,805.69

Finding the Fourth Proportional to 39,709.93, 54,793.78 and 21,805.69

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Solution

The fourth proportional to 39,709.93, 54,793.78 and 21,805.69 is: 30,088.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,709.93 : 54,793.78 = 21,805.69 : x
  2. Step 2: Convert to fraction form
    39,709.93/54,793.78 = 21,805.69/x
  3. Step 3: Cross multiply
    39,709.93x = 54,793.78 × 21,805.69
  4. Step 4: Simplify right side
    39,709.93x = 1,194,816,180.61
  5. Step 5: Solve for x
    x = 1,194,816,180.61/39,709.93
  6. Step 6: Final answer
    x = 30,088.60

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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.