Home / 21,302.22-31,931.73-10,192.62

Finding the Fourth Proportional to 21,302.22, 31,931.73 and 10,192.62

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Solution

The fourth proportional to 21,302.22, 31,931.73 and 10,192.62 is: 15,278.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.22 : 31,931.73 = 10,192.62 : x
  2. Step 2: Convert to fraction form
    21,302.22/31,931.73 = 10,192.62/x
  3. Step 3: Cross multiply
    21,302.22x = 31,931.73 × 10,192.62
  4. Step 4: Simplify right side
    21,302.22x = 325,467,989.83
  5. Step 5: Solve for x
    x = 325,467,989.83/21,302.22
  6. Step 6: Final answer
    x = 15,278.59

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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.