Home / 21,540.12-32,310.16-9,845.13

Finding the Fourth Proportional to 21,540.12, 32,310.16 and 9,845.13

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Solution

The fourth proportional to 21,540.12, 32,310.16 and 9,845.13 is: 14,767.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.12 : 32,310.16 = 9,845.13 : x
  2. Step 2: Convert to fraction form
    21,540.12/32,310.16 = 9,845.13/x
  3. Step 3: Cross multiply
    21,540.12x = 32,310.16 × 9,845.13
  4. Step 4: Simplify right side
    21,540.12x = 318,097,725.52
  5. Step 5: Solve for x
    x = 318,097,725.52/21,540.12
  6. Step 6: Final answer
    x = 14,767.69

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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.