Home / 28,021.60-41,983.80-18,155.80

Finding the Fourth Proportional to 28,021.60, 41,983.80 and 18,155.80

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Solution

The fourth proportional to 28,021.60, 41,983.80 and 18,155.80 is: 27,202.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,021.60 : 41,983.80 = 18,155.80 : x
  2. Step 2: Convert to fraction form
    28,021.60/41,983.80 = 18,155.80/x
  3. Step 3: Cross multiply
    28,021.60x = 41,983.80 × 18,155.80
  4. Step 4: Simplify right side
    28,021.60x = 762,249,476.04
  5. Step 5: Solve for x
    x = 762,249,476.04/28,021.60
  6. Step 6: Final answer
    x = 27,202.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.