Home / 15,861.60-21,844.62-15,517.22

Finding the Fourth Proportional to 15,861.60, 21,844.62 and 15,517.22

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Solution

The fourth proportional to 15,861.60, 21,844.62 and 15,517.22 is: 21,370.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,861.60 : 21,844.62 = 15,517.22 : x
  2. Step 2: Convert to fraction form
    15,861.60/21,844.62 = 15,517.22/x
  3. Step 3: Cross multiply
    15,861.60x = 21,844.62 × 15,517.22
  4. Step 4: Simplify right side
    15,861.60x = 338,967,774.36
  5. Step 5: Solve for x
    x = 338,967,774.36/15,861.60
  6. Step 6: Final answer
    x = 21,370.34

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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.