Home / 15,644.20-21,589.38-8,570.62

Finding the Fourth Proportional to 15,644.20, 21,589.38 and 8,570.62

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Solution

The fourth proportional to 15,644.20, 21,589.38 and 8,570.62 is: 11,827.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,644.20 : 21,589.38 = 8,570.62 : x
  2. Step 2: Convert to fraction form
    15,644.20/21,589.38 = 8,570.62/x
  3. Step 3: Cross multiply
    15,644.20x = 21,589.38 × 8,570.62
  4. Step 4: Simplify right side
    15,644.20x = 185,034,372.02
  5. Step 5: Solve for x
    x = 185,034,372.02/15,644.20
  6. Step 6: Final answer
    x = 11,827.67

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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.