Home / 19,791.51-29,688.18-11,019.81

Finding the Fourth Proportional to 19,791.51, 29,688.18 and 11,019.81

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Solution

The fourth proportional to 19,791.51, 29,688.18 and 11,019.81 is: 16,530.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.51 : 29,688.18 = 11,019.81 : x
  2. Step 2: Convert to fraction form
    19,791.51/29,688.18 = 11,019.81/x
  3. Step 3: Cross multiply
    19,791.51x = 29,688.18 × 11,019.81
  4. Step 4: Simplify right side
    19,791.51x = 327,158,102.85
  5. Step 5: Solve for x
    x = 327,158,102.85/19,791.51
  6. Step 6: Final answer
    x = 16,530.22

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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.