Home / 18,088.92-27,129.42-6,991.72

Finding the Fourth Proportional to 18,088.92, 27,129.42 and 6,991.72

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Solution

The fourth proportional to 18,088.92, 27,129.42 and 6,991.72 is: 10,486.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,088.92 : 27,129.42 = 6,991.72 : x
  2. Step 2: Convert to fraction form
    18,088.92/27,129.42 = 6,991.72/x
  3. Step 3: Cross multiply
    18,088.92x = 27,129.42 × 6,991.72
  4. Step 4: Simplify right side
    18,088.92x = 189,681,308.40
  5. Step 5: Solve for x
    x = 189,681,308.40/18,088.92
  6. Step 6: Final answer
    x = 10,486.05

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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.