Home / 28,778.01-43,163.90-7,720.17

Finding the Fourth Proportional to 28,778.01, 43,163.90 and 7,720.17

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Solution

The fourth proportional to 28,778.01, 43,163.90 and 7,720.17 is: 11,579.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.01 : 43,163.90 = 7,720.17 : x
  2. Step 2: Convert to fraction form
    28,778.01/43,163.90 = 7,720.17/x
  3. Step 3: Cross multiply
    28,778.01x = 43,163.90 × 7,720.17
  4. Step 4: Simplify right side
    28,778.01x = 333,232,645.86
  5. Step 5: Solve for x
    x = 333,232,645.86/28,778.01
  6. Step 6: Final answer
    x = 11,579.42

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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.