Home / 21,161.05-31,764.66-15,597.16

Finding the Fourth Proportional to 21,161.05, 31,764.66 and 15,597.16

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Solution

The fourth proportional to 21,161.05, 31,764.66 and 15,597.16 is: 23,412.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.05 : 31,764.66 = 15,597.16 : x
  2. Step 2: Convert to fraction form
    21,161.05/31,764.66 = 15,597.16/x
  3. Step 3: Cross multiply
    21,161.05x = 31,764.66 × 15,597.16
  4. Step 4: Simplify right side
    21,161.05x = 495,438,484.37
  5. Step 5: Solve for x
    x = 495,438,484.37/21,161.05
  6. Step 6: Final answer
    x = 23,412.76

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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.