Home / 21,350.64-32,012.18-8,879.28

Finding the Fourth Proportional to 21,350.64, 32,012.18 and 8,879.28

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Solution

The fourth proportional to 21,350.64, 32,012.18 and 8,879.28 is: 13,313.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350.64 : 32,012.18 = 8,879.28 : x
  2. Step 2: Convert to fraction form
    21,350.64/32,012.18 = 8,879.28/x
  3. Step 3: Cross multiply
    21,350.64x = 32,012.18 × 8,879.28
  4. Step 4: Simplify right side
    21,350.64x = 284,245,109.63
  5. Step 5: Solve for x
    x = 284,245,109.63/21,350.64
  6. Step 6: Final answer
    x = 13,313.19

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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.