Home / 39,882.14-55,037.34-21,976.99

Finding the Fourth Proportional to 39,882.14, 55,037.34 and 21,976.99

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Solution

The fourth proportional to 39,882.14, 55,037.34 and 21,976.99 is: 30,328.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,882.14 : 55,037.34 = 21,976.99 : x
  2. Step 2: Convert to fraction form
    39,882.14/55,037.34 = 21,976.99/x
  3. Step 3: Cross multiply
    39,882.14x = 55,037.34 × 21,976.99
  4. Step 4: Simplify right side
    39,882.14x = 1,209,554,933.21
  5. Step 5: Solve for x
    x = 1,209,554,933.21/39,882.14
  6. Step 6: Final answer
    x = 30,328.24

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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.