Home / 18,421.20-27,631.80-7,327.17

Finding the Fourth Proportional to 18,421.20, 27,631.80 and 7,327.17

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Solution

The fourth proportional to 18,421.20, 27,631.80 and 7,327.17 is: 10,990.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.20 : 27,631.80 = 7,327.17 : x
  2. Step 2: Convert to fraction form
    18,421.20/27,631.80 = 7,327.17/x
  3. Step 3: Cross multiply
    18,421.20x = 27,631.80 × 7,327.17
  4. Step 4: Simplify right side
    18,421.20x = 202,462,896.01
  5. Step 5: Solve for x
    x = 202,462,896.01/18,421.20
  6. Step 6: Final answer
    x = 10,990.76

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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.