Home / 18,078.54-27,111.56-8,589.76

Finding the Fourth Proportional to 18,078.54, 27,111.56 and 8,589.76

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Solution

The fourth proportional to 18,078.54, 27,111.56 and 8,589.76 is: 12,881.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,078.54 : 27,111.56 = 8,589.76 : x
  2. Step 2: Convert to fraction form
    18,078.54/27,111.56 = 8,589.76/x
  3. Step 3: Cross multiply
    18,078.54x = 27,111.56 × 8,589.76
  4. Step 4: Simplify right side
    18,078.54x = 232,881,793.63
  5. Step 5: Solve for x
    x = 232,881,793.63/18,078.54
  6. Step 6: Final answer
    x = 12,881.67

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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.