Home / 21,169.60-31,748.40-8,012.32

Finding the Fourth Proportional to 21,169.60, 31,748.40 and 8,012.32

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Solution

The fourth proportional to 21,169.60, 31,748.40 and 8,012.32 is: 12,016.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.60 : 31,748.40 = 8,012.32 : x
  2. Step 2: Convert to fraction form
    21,169.60/31,748.40 = 8,012.32/x
  3. Step 3: Cross multiply
    21,169.60x = 31,748.40 × 8,012.32
  4. Step 4: Simplify right side
    21,169.60x = 254,378,340.29
  5. Step 5: Solve for x
    x = 254,378,340.29/21,169.60
  6. Step 6: Final answer
    x = 12,016.21

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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.