Home / 15,540.37-21,446.04-8,466.78

Finding the Fourth Proportional to 15,540.37, 21,446.04 and 8,466.78

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Solution

The fourth proportional to 15,540.37, 21,446.04 and 8,466.78 is: 11,684.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.37 : 21,446.04 = 8,466.78 : x
  2. Step 2: Convert to fraction form
    15,540.37/21,446.04 = 8,466.78/x
  3. Step 3: Cross multiply
    15,540.37x = 21,446.04 × 8,466.78
  4. Step 4: Simplify right side
    15,540.37x = 181,578,902.55
  5. Step 5: Solve for x
    x = 181,578,902.55/15,540.37
  6. Step 6: Final answer
    x = 11,684.34

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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.