Home / 21,083.13-31,626.53-8,604.02

Finding the Fourth Proportional to 21,083.13, 31,626.53 and 8,604.02

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Solution

The fourth proportional to 21,083.13, 31,626.53 and 8,604.02 is: 12,906.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,083.13 : 31,626.53 = 8,604.02 : x
  2. Step 2: Convert to fraction form
    21,083.13/31,626.53 = 8,604.02/x
  3. Step 3: Cross multiply
    21,083.13x = 31,626.53 × 8,604.02
  4. Step 4: Simplify right side
    21,083.13x = 272,115,095.50
  5. Step 5: Solve for x
    x = 272,115,095.50/21,083.13
  6. Step 6: Final answer
    x = 12,906.77

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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.