Home / 12,187.10-18,176.68-11,976.50

Finding the Fourth Proportional to 12,187.10, 18,176.68 and 11,976.50

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Solution

The fourth proportional to 12,187.10, 18,176.68 and 11,976.50 is: 17,862.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.10 : 18,176.68 = 11,976.50 : x
  2. Step 2: Convert to fraction form
    12,187.10/18,176.68 = 11,976.50/x
  3. Step 3: Cross multiply
    12,187.10x = 18,176.68 × 11,976.50
  4. Step 4: Simplify right side
    12,187.10x = 217,693,008.02
  5. Step 5: Solve for x
    x = 217,693,008.02/12,187.10
  6. Step 6: Final answer
    x = 17,862.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.