Home / 12,112.49-18,168.73-5,182.13

Finding the Fourth Proportional to 12,112.49, 18,168.73 and 5,182.13

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Solution

The fourth proportional to 12,112.49, 18,168.73 and 5,182.13 is: 7,773.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.49 : 18,168.73 = 5,182.13 : x
  2. Step 2: Convert to fraction form
    12,112.49/18,168.73 = 5,182.13/x
  3. Step 3: Cross multiply
    12,112.49x = 18,168.73 × 5,182.13
  4. Step 4: Simplify right side
    12,112.49x = 94,152,720.79
  5. Step 5: Solve for x
    x = 94,152,720.79/12,112.49
  6. Step 6: Final answer
    x = 7,773.19

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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.