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Finding the Fourth Proportional to 18,710.22, 28,057.07 and 7,015.24

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Solution

The fourth proportional to 18,710.22, 28,057.07 and 7,015.24 is: 10,519.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.22 : 28,057.07 = 7,015.24 : x
  2. Step 2: Convert to fraction form
    18,710.22/28,057.07 = 7,015.24/x
  3. Step 3: Cross multiply
    18,710.22x = 28,057.07 × 7,015.24
  4. Step 4: Simplify right side
    18,710.22x = 196,827,079.75
  5. Step 5: Solve for x
    x = 196,827,079.75/18,710.22
  6. Step 6: Final answer
    x = 10,519.76

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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.