Home / 18,118.15-27,179.93-6,430.39

Finding the Fourth Proportional to 18,118.15, 27,179.93 and 6,430.39

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Solution

The fourth proportional to 18,118.15, 27,179.93 and 6,430.39 is: 9,646.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.15 : 27,179.93 = 6,430.39 : x
  2. Step 2: Convert to fraction form
    18,118.15/27,179.93 = 6,430.39/x
  3. Step 3: Cross multiply
    18,118.15x = 27,179.93 × 6,430.39
  4. Step 4: Simplify right side
    18,118.15x = 174,777,517.92
  5. Step 5: Solve for x
    x = 174,777,517.92/18,118.15
  6. Step 6: Final answer
    x = 9,646.54

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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.