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Finding the Fourth Proportional to 21,610.77, 32,416.17 and 6,821.19

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Solution

The fourth proportional to 21,610.77, 32,416.17 and 6,821.19 is: 10,231.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,610.77 : 32,416.17 = 6,821.19 : x
  2. Step 2: Convert to fraction form
    21,610.77/32,416.17 = 6,821.19/x
  3. Step 3: Cross multiply
    21,610.77x = 32,416.17 × 6,821.19
  4. Step 4: Simplify right side
    21,610.77x = 221,116,854.64
  5. Step 5: Solve for x
    x = 221,116,854.64/21,610.77
  6. Step 6: Final answer
    x = 10,231.79

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1.5x scale

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.