Home / 21,085.32-31,638.93-9,395.82

Finding the Fourth Proportional to 21,085.32, 31,638.93 and 9,395.82

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Solution

The fourth proportional to 21,085.32, 31,638.93 and 9,395.82 is: 14,098.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.32 : 31,638.93 = 9,395.82 : x
  2. Step 2: Convert to fraction form
    21,085.32/31,638.93 = 9,395.82/x
  3. Step 3: Cross multiply
    21,085.32x = 31,638.93 × 9,395.82
  4. Step 4: Simplify right side
    21,085.32x = 297,273,691.27
  5. Step 5: Solve for x
    x = 297,273,691.27/21,085.32
  6. Step 6: Final answer
    x = 14,098.61

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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.