Home / 21,132.84-31,697.37-6,345.06

Finding the Fourth Proportional to 21,132.84, 31,697.37 and 6,345.06

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Solution

The fourth proportional to 21,132.84, 31,697.37 and 6,345.06 is: 9,517.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.84 : 31,697.37 = 6,345.06 : x
  2. Step 2: Convert to fraction form
    21,132.84/31,697.37 = 6,345.06/x
  3. Step 3: Cross multiply
    21,132.84x = 31,697.37 × 6,345.06
  4. Step 4: Simplify right side
    21,132.84x = 201,121,714.49
  5. Step 5: Solve for x
    x = 201,121,714.49/21,132.84
  6. Step 6: Final answer
    x = 9,517.02

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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.