Home / 21,375.02-29,499.26-11,815.76

Finding the Fourth Proportional to 21,375.02, 29,499.26 and 11,815.76

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Solution

The fourth proportional to 21,375.02, 29,499.26 and 11,815.76 is: 16,306.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.02 : 29,499.26 = 11,815.76 : x
  2. Step 2: Convert to fraction form
    21,375.02/29,499.26 = 11,815.76/x
  3. Step 3: Cross multiply
    21,375.02x = 29,499.26 × 11,815.76
  4. Step 4: Simplify right side
    21,375.02x = 348,556,176.34
  5. Step 5: Solve for x
    x = 348,556,176.34/21,375.02
  6. Step 6: Final answer
    x = 16,306.71

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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.