Home / 39,979.47-55,178.79-23,847.78

Finding the Fourth Proportional to 39,979.47, 55,178.79 and 23,847.78

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Solution

The fourth proportional to 39,979.47, 55,178.79 and 23,847.78 is: 32,914.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,979.47 : 55,178.79 = 23,847.78 : x
  2. Step 2: Convert to fraction form
    39,979.47/55,178.79 = 23,847.78/x
  3. Step 3: Cross multiply
    39,979.47x = 55,178.79 × 23,847.78
  4. Step 4: Simplify right side
    39,979.47x = 1,315,891,644.59
  5. Step 5: Solve for x
    x = 1,315,891,644.59/39,979.47
  6. Step 6: Final answer
    x = 32,914.18

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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.