Home / 12,144.49-18,215.17-5,127.28

Finding the Fourth Proportional to 12,144.49, 18,215.17 and 5,127.28

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Solution

The fourth proportional to 12,144.49, 18,215.17 and 5,127.28 is: 7,690.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.49 : 18,215.17 = 5,127.28 : x
  2. Step 2: Convert to fraction form
    12,144.49/18,215.17 = 5,127.28/x
  3. Step 3: Cross multiply
    12,144.49x = 18,215.17 × 5,127.28
  4. Step 4: Simplify right side
    12,144.49x = 93,394,218.48
  5. Step 5: Solve for x
    x = 93,394,218.48/12,144.49
  6. Step 6: Final answer
    x = 7,690.26

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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.