Home / 12,127.48-18,184.77-3,805.22

Finding the Fourth Proportional to 12,127.48, 18,184.77 and 3,805.22

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Solution

The fourth proportional to 12,127.48, 18,184.77 and 3,805.22 is: 5,705.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.48 : 18,184.77 = 3,805.22 : x
  2. Step 2: Convert to fraction form
    12,127.48/18,184.77 = 3,805.22/x
  3. Step 3: Cross multiply
    12,127.48x = 18,184.77 × 3,805.22
  4. Step 4: Simplify right side
    12,127.48x = 69,197,095.96
  5. Step 5: Solve for x
    x = 69,197,095.96/12,127.48
  6. Step 6: Final answer
    x = 5,705.81

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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.