Home / 18,378.19-27,567.29-7,989.94

Finding the Fourth Proportional to 18,378.19, 27,567.29 and 7,989.94

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Solution

The fourth proportional to 18,378.19, 27,567.29 and 7,989.94 is: 11,984.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.19 : 27,567.29 = 7,989.94 : x
  2. Step 2: Convert to fraction form
    18,378.19/27,567.29 = 7,989.94/x
  3. Step 3: Cross multiply
    18,378.19x = 27,567.29 × 7,989.94
  4. Step 4: Simplify right side
    18,378.19x = 220,260,884.19
  5. Step 5: Solve for x
    x = 220,260,884.19/18,378.19
  6. Step 6: Final answer
    x = 11,984.91

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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.