Home / 31,328.10-43,249.41-21,310.02

Finding the Fourth Proportional to 31,328.10, 43,249.41 and 21,310.02

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Solution

The fourth proportional to 31,328.10, 43,249.41 and 21,310.02 is: 29,419.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,328.10 : 43,249.41 = 21,310.02 : x
  2. Step 2: Convert to fraction form
    31,328.10/43,249.41 = 21,310.02/x
  3. Step 3: Cross multiply
    31,328.10x = 43,249.41 × 21,310.02
  4. Step 4: Simplify right side
    31,328.10x = 921,645,792.09
  5. Step 5: Solve for x
    x = 921,645,792.09/31,328.10
  6. Step 6: Final answer
    x = 29,419.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.