Home / 21,176.34-31,756.44-7,132.60

Finding the Fourth Proportional to 21,176.34, 31,756.44 and 7,132.60

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Solution

The fourth proportional to 21,176.34, 31,756.44 and 7,132.60 is: 10,696.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.34 : 31,756.44 = 7,132.60 : x
  2. Step 2: Convert to fraction form
    21,176.34/31,756.44 = 7,132.60/x
  3. Step 3: Cross multiply
    21,176.34x = 31,756.44 × 7,132.60
  4. Step 4: Simplify right side
    21,176.34x = 226,505,983.94
  5. Step 5: Solve for x
    x = 226,505,983.94/21,176.34
  6. Step 6: Final answer
    x = 10,696.18

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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.