Home / 21,010.94-31,507.20-6,221.02

Finding the Fourth Proportional to 21,010.94, 31,507.20 and 6,221.02

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Solution

The fourth proportional to 21,010.94, 31,507.20 and 6,221.02 is: 9,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.94 : 31,507.20 = 6,221.02 : x
  2. Step 2: Convert to fraction form
    21,010.94/31,507.20 = 6,221.02/x
  3. Step 3: Cross multiply
    21,010.94x = 31,507.20 × 6,221.02
  4. Step 4: Simplify right side
    21,010.94x = 196,006,921.34
  5. Step 5: Solve for x
    x = 196,006,921.34/21,010.94
  6. Step 6: Final answer
    x = 9,328.80

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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.