Home / 21,836.13-30,140.35-14,179.20

Finding the Fourth Proportional to 21,836.13, 30,140.35 and 14,179.20

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Solution

The fourth proportional to 21,836.13, 30,140.35 and 14,179.20 is: 19,571.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.13 : 30,140.35 = 14,179.20 : x
  2. Step 2: Convert to fraction form
    21,836.13/30,140.35 = 14,179.20/x
  3. Step 3: Cross multiply
    21,836.13x = 30,140.35 × 14,179.20
  4. Step 4: Simplify right side
    21,836.13x = 427,366,151.54
  5. Step 5: Solve for x
    x = 427,366,151.54/21,836.13
  6. Step 6: Final answer
    x = 19,571.51

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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.