Home / 12,149.73-18,216.79-5,127.84

Finding the Fourth Proportional to 12,149.73, 18,216.79 and 5,127.84

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Solution

The fourth proportional to 12,149.73, 18,216.79 and 5,127.84 is: 7,688.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,149.73 : 18,216.79 = 5,127.84 : x
  2. Step 2: Convert to fraction form
    12,149.73/18,216.79 = 5,127.84/x
  3. Step 3: Cross multiply
    12,149.73x = 18,216.79 × 5,127.84
  4. Step 4: Simplify right side
    12,149.73x = 93,412,771.61
  5. Step 5: Solve for x
    x = 93,412,771.61/12,149.73
  6. Step 6: Final answer
    x = 7,688.46

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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.