Home / 20,878.22-31,334.78-19,564.54

Finding the Fourth Proportional to 20,878.22, 31,334.78 and 19,564.54

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Solution

The fourth proportional to 20,878.22, 31,334.78 and 19,564.54 is: 29,363.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,878.22 : 31,334.78 = 19,564.54 : x
  2. Step 2: Convert to fraction form
    20,878.22/31,334.78 = 19,564.54/x
  3. Step 3: Cross multiply
    20,878.22x = 31,334.78 × 19,564.54
  4. Step 4: Simplify right side
    20,878.22x = 613,050,527.28
  5. Step 5: Solve for x
    x = 613,050,527.28/20,878.22
  6. Step 6: Final answer
    x = 29,363.16

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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.