Home / 21,037.27-31,560.21-8,557.20

Finding the Fourth Proportional to 21,037.27, 31,560.21 and 8,557.20

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Solution

The fourth proportional to 21,037.27, 31,560.21 and 8,557.20 is: 12,837.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,037.27 : 31,560.21 = 8,557.20 : x
  2. Step 2: Convert to fraction form
    21,037.27/31,560.21 = 8,557.20/x
  3. Step 3: Cross multiply
    21,037.27x = 31,560.21 × 8,557.20
  4. Step 4: Simplify right side
    21,037.27x = 270,066,910.66
  5. Step 5: Solve for x
    x = 270,066,910.66/21,037.27
  6. Step 6: Final answer
    x = 12,837.54

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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.