Home / 12,156.90-18,233.73-3,391.08

Finding the Fourth Proportional to 12,156.90, 18,233.73 and 3,391.08

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Solution

The fourth proportional to 12,156.90, 18,233.73 and 3,391.08 is: 5,086.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.90 : 18,233.73 = 3,391.08 : x
  2. Step 2: Convert to fraction form
    12,156.90/18,233.73 = 3,391.08/x
  3. Step 3: Cross multiply
    12,156.90x = 18,233.73 × 3,391.08
  4. Step 4: Simplify right side
    12,156.90x = 61,832,037.13
  5. Step 5: Solve for x
    x = 61,832,037.13/12,156.90
  6. Step 6: Final answer
    x = 5,086.17

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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.