Home / 21,227.76-31,817.76-10,125.36

Finding the Fourth Proportional to 21,227.76, 31,817.76 and 10,125.36

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Solution

The fourth proportional to 21,227.76, 31,817.76 and 10,125.36 is: 15,176.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,227.76 : 31,817.76 = 10,125.36 : x
  2. Step 2: Convert to fraction form
    21,227.76/31,817.76 = 10,125.36/x
  3. Step 3: Cross multiply
    21,227.76x = 31,817.76 × 10,125.36
  4. Step 4: Simplify right side
    21,227.76x = 322,166,274.39
  5. Step 5: Solve for x
    x = 322,166,274.39/21,227.76
  6. Step 6: Final answer
    x = 15,176.65

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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.