Home / 21,049.26-31,575.60-7,008.78

Finding the Fourth Proportional to 21,049.26, 31,575.60 and 7,008.78

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Solution

The fourth proportional to 21,049.26, 31,575.60 and 7,008.78 is: 10,513.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.26 : 31,575.60 = 7,008.78 : x
  2. Step 2: Convert to fraction form
    21,049.26/31,575.60 = 7,008.78/x
  3. Step 3: Cross multiply
    21,049.26x = 31,575.60 × 7,008.78
  4. Step 4: Simplify right side
    21,049.26x = 221,306,433.77
  5. Step 5: Solve for x
    x = 221,306,433.77/21,049.26
  6. Step 6: Final answer
    x = 10,513.74

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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.