Home / 20,115.06-27,762.12-11,731.56

Finding the Fourth Proportional to 20,115.06, 27,762.12 and 11,731.56

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Solution

The fourth proportional to 20,115.06, 27,762.12 and 11,731.56 is: 16,191.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.06 : 27,762.12 = 11,731.56 : x
  2. Step 2: Convert to fraction form
    20,115.06/27,762.12 = 11,731.56/x
  3. Step 3: Cross multiply
    20,115.06x = 27,762.12 × 11,731.56
  4. Step 4: Simplify right side
    20,115.06x = 325,692,976.51
  5. Step 5: Solve for x
    x = 325,692,976.51/20,115.06
  6. Step 6: Final answer
    x = 16,191.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.