Home / 15,861.24-21,891.60-9,146.64

Finding the Fourth Proportional to 15,861.24, 21,891.60 and 9,146.64

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Solution

The fourth proportional to 15,861.24, 21,891.60 and 9,146.64 is: 12,624.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,861.24 : 21,891.60 = 9,146.64 : x
  2. Step 2: Convert to fraction form
    15,861.24/21,891.60 = 9,146.64/x
  3. Step 3: Cross multiply
    15,861.24x = 21,891.60 × 9,146.64
  4. Step 4: Simplify right side
    15,861.24x = 200,234,584.22
  5. Step 5: Solve for x
    x = 200,234,584.22/15,861.24
  6. Step 6: Final answer
    x = 12,624.14

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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.