Home / 19,661.28-27,151.85-16,812.21

Finding the Fourth Proportional to 19,661.28, 27,151.85 and 16,812.21

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Solution

The fourth proportional to 19,661.28, 27,151.85 and 16,812.21 is: 23,217.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,661.28 : 27,151.85 = 16,812.21 : x
  2. Step 2: Convert to fraction form
    19,661.28/27,151.85 = 16,812.21/x
  3. Step 3: Cross multiply
    19,661.28x = 27,151.85 × 16,812.21
  4. Step 4: Simplify right side
    19,661.28x = 456,482,520.03
  5. Step 5: Solve for x
    x = 456,482,520.03/19,661.28
  6. Step 6: Final answer
    x = 23,217.33

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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.