Home / 21,296.13-31,948.02-8,809.35

Finding the Fourth Proportional to 21,296.13, 31,948.02 and 8,809.35

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Solution

The fourth proportional to 21,296.13, 31,948.02 and 8,809.35 is: 13,215.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,296.13 : 31,948.02 = 8,809.35 : x
  2. Step 2: Convert to fraction form
    21,296.13/31,948.02 = 8,809.35/x
  3. Step 3: Cross multiply
    21,296.13x = 31,948.02 × 8,809.35
  4. Step 4: Simplify right side
    21,296.13x = 281,441,289.99
  5. Step 5: Solve for x
    x = 281,441,289.99/21,296.13
  6. Step 6: Final answer
    x = 13,215.61

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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.