Home / 18,399.15-27,591.64-7,862.47

Finding the Fourth Proportional to 18,399.15, 27,591.64 and 7,862.47

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Solution

The fourth proportional to 18,399.15, 27,591.64 and 7,862.47 is: 11,790.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,399.15 : 27,591.64 = 7,862.47 : x
  2. Step 2: Convert to fraction form
    18,399.15/27,591.64 = 7,862.47/x
  3. Step 3: Cross multiply
    18,399.15x = 27,591.64 × 7,862.47
  4. Step 4: Simplify right side
    18,399.15x = 216,938,353.12
  5. Step 5: Solve for x
    x = 216,938,353.12/18,399.15
  6. Step 6: Final answer
    x = 11,790.67

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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.