Home / 21,273.40-31,910.09-5,690.62

Finding the Fourth Proportional to 21,273.40, 31,910.09 and 5,690.62

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Solution

The fourth proportional to 21,273.40, 31,910.09 and 5,690.62 is: 8,535.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273.40 : 31,910.09 = 5,690.62 : x
  2. Step 2: Convert to fraction form
    21,273.40/31,910.09 = 5,690.62/x
  3. Step 3: Cross multiply
    21,273.40x = 31,910.09 × 5,690.62
  4. Step 4: Simplify right side
    21,273.40x = 181,588,008.35
  5. Step 5: Solve for x
    x = 181,588,008.35/21,273.40
  6. Step 6: Final answer
    x = 8,535.92

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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.