Home / 21,348.46-31,998.38-13,346.91

Finding the Fourth Proportional to 21,348.46, 31,998.38 and 13,346.91

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Solution

The fourth proportional to 21,348.46, 31,998.38 and 13,346.91 is: 20,005.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,348.46 : 31,998.38 = 13,346.91 : x
  2. Step 2: Convert to fraction form
    21,348.46/31,998.38 = 13,346.91/x
  3. Step 3: Cross multiply
    21,348.46x = 31,998.38 × 13,346.91
  4. Step 4: Simplify right side
    21,348.46x = 427,079,431.27
  5. Step 5: Solve for x
    x = 427,079,431.27/21,348.46
  6. Step 6: Final answer
    x = 20,005.16

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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.