Home / 31,319.10-43,236.99-21,301.02

Finding the Fourth Proportional to 31,319.10, 43,236.99 and 21,301.02

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Solution

The fourth proportional to 31,319.10, 43,236.99 and 21,301.02 is: 29,406.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,319.10 : 43,236.99 = 21,301.02 : x
  2. Step 2: Convert to fraction form
    31,319.10/43,236.99 = 21,301.02/x
  3. Step 3: Cross multiply
    31,319.10x = 43,236.99 × 21,301.02
  4. Step 4: Simplify right side
    31,319.10x = 920,991,988.73
  5. Step 5: Solve for x
    x = 920,991,988.73/31,319.10
  6. Step 6: Final answer
    x = 29,406.72

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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.