Home / 15,310.67-21,135.20-9,344.48

Finding the Fourth Proportional to 15,310.67, 21,135.20 and 9,344.48

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Solution

The fourth proportional to 15,310.67, 21,135.20 and 9,344.48 is: 12,899.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.67 : 21,135.20 = 9,344.48 : x
  2. Step 2: Convert to fraction form
    15,310.67/21,135.20 = 9,344.48/x
  3. Step 3: Cross multiply
    15,310.67x = 21,135.20 × 9,344.48
  4. Step 4: Simplify right side
    15,310.67x = 197,497,301.30
  5. Step 5: Solve for x
    x = 197,497,301.30/15,310.67
  6. Step 6: Final answer
    x = 12,899.33

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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.