Home / 18,520.28-25,557.79-10,022.21

Finding the Fourth Proportional to 18,520.28, 25,557.79 and 10,022.21

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Solution

The fourth proportional to 18,520.28, 25,557.79 and 10,022.21 is: 13,830.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.28 : 25,557.79 = 10,022.21 : x
  2. Step 2: Convert to fraction form
    18,520.28/25,557.79 = 10,022.21/x
  3. Step 3: Cross multiply
    18,520.28x = 25,557.79 × 10,022.21
  4. Step 4: Simplify right side
    18,520.28x = 256,145,552.30
  5. Step 5: Solve for x
    x = 256,145,552.30/18,520.28
  6. Step 6: Final answer
    x = 13,830.55

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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.