Home / 20,551.15-30,828.55-5,760.25

Finding the Fourth Proportional to 20,551.15, 30,828.55 and 5,760.25

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Solution

The fourth proportional to 20,551.15, 30,828.55 and 5,760.25 is: 8,640.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.15 : 30,828.55 = 5,760.25 : x
  2. Step 2: Convert to fraction form
    20,551.15/30,828.55 = 5,760.25/x
  3. Step 3: Cross multiply
    20,551.15x = 30,828.55 × 5,760.25
  4. Step 4: Simplify right side
    20,551.15x = 177,580,155.14
  5. Step 5: Solve for x
    x = 177,580,155.14/20,551.15
  6. Step 6: Final answer
    x = 8,640.89

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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.