Home / 12,127.95-18,192.42-4,231.26

Finding the Fourth Proportional to 12,127.95, 18,192.42 and 4,231.26

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Solution

The fourth proportional to 12,127.95, 18,192.42 and 4,231.26 is: 6,347.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.95 : 18,192.42 = 4,231.26 : x
  2. Step 2: Convert to fraction form
    12,127.95/18,192.42 = 4,231.26/x
  3. Step 3: Cross multiply
    12,127.95x = 18,192.42 × 4,231.26
  4. Step 4: Simplify right side
    12,127.95x = 76,976,859.05
  5. Step 5: Solve for x
    x = 76,976,859.05/12,127.95
  6. Step 6: Final answer
    x = 6,347.06

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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.