Home / 20,764.96-31,054.79-18,440.06

Finding the Fourth Proportional to 20,764.96, 31,054.79 and 18,440.06

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Solution

The fourth proportional to 20,764.96, 31,054.79 and 18,440.06 is: 27,577.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.96 : 31,054.79 = 18,440.06 : x
  2. Step 2: Convert to fraction form
    20,764.96/31,054.79 = 18,440.06/x
  3. Step 3: Cross multiply
    20,764.96x = 31,054.79 × 18,440.06
  4. Step 4: Simplify right side
    20,764.96x = 572,652,081.71
  5. Step 5: Solve for x
    x = 572,652,081.71/20,764.96
  6. Step 6: Final answer
    x = 27,577.81

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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.