Home / 21,079.64-31,610.05-6,284.59

Finding the Fourth Proportional to 21,079.64, 31,610.05 and 6,284.59

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Solution

The fourth proportional to 21,079.64, 31,610.05 and 6,284.59 is: 9,424.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.64 : 31,610.05 = 6,284.59 : x
  2. Step 2: Convert to fraction form
    21,079.64/31,610.05 = 6,284.59/x
  3. Step 3: Cross multiply
    21,079.64x = 31,610.05 × 6,284.59
  4. Step 4: Simplify right side
    21,079.64x = 198,656,109.39
  5. Step 5: Solve for x
    x = 198,656,109.39/21,079.64
  6. Step 6: Final answer
    x = 9,424.07

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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.