Home / 20,735.19-31,085.37-8,264.43

Finding the Fourth Proportional to 20,735.19, 31,085.37 and 8,264.43

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Solution

The fourth proportional to 20,735.19, 31,085.37 and 8,264.43 is: 12,389.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.19 : 31,085.37 = 8,264.43 : x
  2. Step 2: Convert to fraction form
    20,735.19/31,085.37 = 8,264.43/x
  3. Step 3: Cross multiply
    20,735.19x = 31,085.37 × 8,264.43
  4. Step 4: Simplify right side
    20,735.19x = 256,902,864.39
  5. Step 5: Solve for x
    x = 256,902,864.39/20,735.19
  6. Step 6: Final answer
    x = 12,389.70

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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.