Home / 21,270.61-31,907.38-7,224.91

Finding the Fourth Proportional to 21,270.61, 31,907.38 and 7,224.91

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Solution

The fourth proportional to 21,270.61, 31,907.38 and 7,224.91 is: 10,837.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.61 : 31,907.38 = 7,224.91 : x
  2. Step 2: Convert to fraction form
    21,270.61/31,907.38 = 7,224.91/x
  3. Step 3: Cross multiply
    21,270.61x = 31,907.38 × 7,224.91
  4. Step 4: Simplify right side
    21,270.61x = 230,527,948.84
  5. Step 5: Solve for x
    x = 230,527,948.84/21,270.61
  6. Step 6: Final answer
    x = 10,837.86

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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.