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Finding the Fourth Proportional to 21,775.31, 30,050.24 and 12,217.31

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Solution

The fourth proportional to 21,775.31, 30,050.24 and 12,217.31 is: 16,860.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.31 : 30,050.24 = 12,217.31 : x
  2. Step 2: Convert to fraction form
    21,775.31/30,050.24 = 12,217.31/x
  3. Step 3: Cross multiply
    21,775.31x = 30,050.24 × 12,217.31
  4. Step 4: Simplify right side
    21,775.31x = 367,132,886.32
  5. Step 5: Solve for x
    x = 367,132,886.32/21,775.31
  6. Step 6: Final answer
    x = 16,860.06

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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.