Home / 31,310.10-43,224.57-21,292.02

Finding the Fourth Proportional to 31,310.10, 43,224.57 and 21,292.02

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Solution

The fourth proportional to 31,310.10, 43,224.57 and 21,292.02 is: 29,394.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,310.10 : 43,224.57 = 21,292.02 : x
  2. Step 2: Convert to fraction form
    31,310.10/43,224.57 = 21,292.02/x
  3. Step 3: Cross multiply
    31,310.10x = 43,224.57 × 21,292.02
  4. Step 4: Simplify right side
    31,310.10x = 920,338,408.93
  5. Step 5: Solve for x
    x = 920,338,408.93/31,310.10
  6. Step 6: Final answer
    x = 29,394.30

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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.