Home / 15,644.28-21,589.20-8,570.73

Finding the Fourth Proportional to 15,644.28, 21,589.20 and 8,570.73

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Solution

The fourth proportional to 15,644.28, 21,589.20 and 8,570.73 is: 11,827.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,644.28 : 21,589.20 = 8,570.73 : x
  2. Step 2: Convert to fraction form
    15,644.28/21,589.20 = 8,570.73/x
  3. Step 3: Cross multiply
    15,644.28x = 21,589.20 × 8,570.73
  4. Step 4: Simplify right side
    15,644.28x = 185,035,204.12
  5. Step 5: Solve for x
    x = 185,035,204.12/15,644.28
  6. Step 6: Final answer
    x = 11,827.66

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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.