Home / 21,079.44-31,619.10-6,288

Finding the Fourth Proportional to 21,079.44, 31,619.10 and 6,288

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Solution

The fourth proportional to 21,079.44, 31,619.10 and 6,288 is: 9,431.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.44 : 31,619.10 = 6,288 : x
  2. Step 2: Convert to fraction form
    21,079.44/31,619.10 = 6,288/x
  3. Step 3: Cross multiply
    21,079.44x = 31,619.10 × 6,288
  4. Step 4: Simplify right side
    21,079.44x = 198,820,900.80
  5. Step 5: Solve for x
    x = 198,820,900.80/21,079.44
  6. Step 6: Final answer
    x = 9,431.98

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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.