Home / 39,888.87-55,044.39-21,983.82

Finding the Fourth Proportional to 39,888.87, 55,044.39 and 21,983.82

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Solution

The fourth proportional to 39,888.87, 55,044.39 and 21,983.82 is: 30,336.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888.87 : 55,044.39 = 21,983.82 : x
  2. Step 2: Convert to fraction form
    39,888.87/55,044.39 = 21,983.82/x
  3. Step 3: Cross multiply
    39,888.87x = 55,044.39 × 21,983.82
  4. Step 4: Simplify right side
    39,888.87x = 1,210,085,961.77
  5. Step 5: Solve for x
    x = 1,210,085,961.77/39,888.87
  6. Step 6: Final answer
    x = 30,336.43

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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.