Home / 39,716.49-54,809.15-21,811.88

Finding the Fourth Proportional to 39,716.49, 54,809.15 and 21,811.88

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Solution

The fourth proportional to 39,716.49, 54,809.15 and 21,811.88 is: 30,100.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,716.49 : 54,809.15 = 21,811.88 : x
  2. Step 2: Convert to fraction form
    39,716.49/54,809.15 = 21,811.88/x
  3. Step 3: Cross multiply
    39,716.49x = 54,809.15 × 21,811.88
  4. Step 4: Simplify right side
    39,716.49x = 1,195,490,602.70
  5. Step 5: Solve for x
    x = 1,195,490,602.70/39,716.49
  6. Step 6: Final answer
    x = 30,100.61

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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.