Home / 12,078.48-18,116.49-5,502.90

Finding the Fourth Proportional to 12,078.48, 18,116.49 and 5,502.90

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Solution

The fourth proportional to 12,078.48, 18,116.49 and 5,502.90 is: 8,253.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.48 : 18,116.49 = 5,502.90 : x
  2. Step 2: Convert to fraction form
    12,078.48/18,116.49 = 5,502.90/x
  3. Step 3: Cross multiply
    12,078.48x = 18,116.49 × 5,502.90
  4. Step 4: Simplify right side
    12,078.48x = 99,693,232.82
  5. Step 5: Solve for x
    x = 99,693,232.82/12,078.48
  6. Step 6: Final answer
    x = 8,253.79

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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.