Home / 21,204.42-31,806.66-7,164.51

Finding the Fourth Proportional to 21,204.42, 31,806.66 and 7,164.51

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Solution

The fourth proportional to 21,204.42, 31,806.66 and 7,164.51 is: 10,746.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.42 : 31,806.66 = 7,164.51 : x
  2. Step 2: Convert to fraction form
    21,204.42/31,806.66 = 7,164.51/x
  3. Step 3: Cross multiply
    21,204.42x = 31,806.66 × 7,164.51
  4. Step 4: Simplify right side
    21,204.42x = 227,879,133.64
  5. Step 5: Solve for x
    x = 227,879,133.64/21,204.42
  6. Step 6: Final answer
    x = 10,746.78

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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.