Home / 18,129.51-27,187.43-8,766.42

Finding the Fourth Proportional to 18,129.51, 27,187.43 and 8,766.42

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Solution

The fourth proportional to 18,129.51, 27,187.43 and 8,766.42 is: 13,146.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.51 : 27,187.43 = 8,766.42 : x
  2. Step 2: Convert to fraction form
    18,129.51/27,187.43 = 8,766.42/x
  3. Step 3: Cross multiply
    18,129.51x = 27,187.43 × 8,766.42
  4. Step 4: Simplify right side
    18,129.51x = 238,336,430.10
  5. Step 5: Solve for x
    x = 238,336,430.10/18,129.51
  6. Step 6: Final answer
    x = 13,146.32

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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.