Home / 20,961.03-31,432.31-11,098.01

Finding the Fourth Proportional to 20,961.03, 31,432.31 and 11,098.01

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Solution

The fourth proportional to 20,961.03, 31,432.31 and 11,098.01 is: 16,642.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.03 : 31,432.31 = 11,098.01 : x
  2. Step 2: Convert to fraction form
    20,961.03/31,432.31 = 11,098.01/x
  3. Step 3: Cross multiply
    20,961.03x = 31,432.31 × 11,098.01
  4. Step 4: Simplify right side
    20,961.03x = 348,835,878.05
  5. Step 5: Solve for x
    x = 348,835,878.05/20,961.03
  6. Step 6: Final answer
    x = 16,642.12

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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.