Home / 15,933.76-21,989.02-9,219.96

Finding the Fourth Proportional to 15,933.76, 21,989.02 and 9,219.96

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Solution

The fourth proportional to 15,933.76, 21,989.02 and 9,219.96 is: 12,723.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.76 : 21,989.02 = 9,219.96 : x
  2. Step 2: Convert to fraction form
    15,933.76/21,989.02 = 9,219.96/x
  3. Step 3: Cross multiply
    15,933.76x = 21,989.02 × 9,219.96
  4. Step 4: Simplify right side
    15,933.76x = 202,737,884.84
  5. Step 5: Solve for x
    x = 202,737,884.84/15,933.76
  6. Step 6: Final answer
    x = 12,723.79

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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.