Home / 28,720.28-43,087.44-9,997.64

Finding the Fourth Proportional to 28,720.28, 43,087.44 and 9,997.64

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Solution

The fourth proportional to 28,720.28, 43,087.44 and 9,997.64 is: 14,998.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.28 : 43,087.44 = 9,997.64 : x
  2. Step 2: Convert to fraction form
    28,720.28/43,087.44 = 9,997.64/x
  3. Step 3: Cross multiply
    28,720.28x = 43,087.44 × 9,997.64
  4. Step 4: Simplify right side
    28,720.28x = 430,772,713.64
  5. Step 5: Solve for x
    x = 430,772,713.64/28,720.28
  6. Step 6: Final answer
    x = 14,998.90

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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.