Home / 18,081.36-27,110.40-6,988.56

Finding the Fourth Proportional to 18,081.36, 27,110.40 and 6,988.56

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Solution

The fourth proportional to 18,081.36, 27,110.40 and 6,988.56 is: 10,478.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,081.36 : 27,110.40 = 6,988.56 : x
  2. Step 2: Convert to fraction form
    18,081.36/27,110.40 = 6,988.56/x
  3. Step 3: Cross multiply
    18,081.36x = 27,110.40 × 6,988.56
  4. Step 4: Simplify right side
    18,081.36x = 189,462,657.02
  5. Step 5: Solve for x
    x = 189,462,657.02/18,081.36
  6. Step 6: Final answer
    x = 10,478.34

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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.