Home / 15,222.12-21,005.10-8,933.28

Finding the Fourth Proportional to 15,222.12, 21,005.10 and 8,933.28

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Solution

The fourth proportional to 15,222.12, 21,005.10 and 8,933.28 is: 12,327.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,222.12 : 21,005.10 = 8,933.28 : x
  2. Step 2: Convert to fraction form
    15,222.12/21,005.10 = 8,933.28/x
  3. Step 3: Cross multiply
    15,222.12x = 21,005.10 × 8,933.28
  4. Step 4: Simplify right side
    15,222.12x = 187,644,439.73
  5. Step 5: Solve for x
    x = 187,644,439.73/15,222.12
  6. Step 6: Final answer
    x = 12,327.09

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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.