Home / 27,115.06-40,669.86-12,320

Finding the Fourth Proportional to 27,115.06, 40,669.86 and 12,320

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Solution

The fourth proportional to 27,115.06, 40,669.86 and 12,320 is: 18,478.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,115.06 : 40,669.86 = 12,320 : x
  2. Step 2: Convert to fraction form
    27,115.06/40,669.86 = 12,320/x
  3. Step 3: Cross multiply
    27,115.06x = 40,669.86 × 12,320
  4. Step 4: Simplify right side
    27,115.06x = 501,052,675.20
  5. Step 5: Solve for x
    x = 501,052,675.20/27,115.06
  6. Step 6: Final answer
    x = 18,478.76

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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.