Home / 27,109.11-40,638.69-12,108.36

Finding the Fourth Proportional to 27,109.11, 40,638.69 and 12,108.36

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Solution

The fourth proportional to 27,109.11, 40,638.69 and 12,108.36 is: 18,151.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,109.11 : 40,638.69 = 12,108.36 : x
  2. Step 2: Convert to fraction form
    27,109.11/40,638.69 = 12,108.36/x
  3. Step 3: Cross multiply
    27,109.11x = 40,638.69 × 12,108.36
  4. Step 4: Simplify right side
    27,109.11x = 492,067,888.45
  5. Step 5: Solve for x
    x = 492,067,888.45/27,109.11
  6. Step 6: Final answer
    x = 18,151.38

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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.