Home / 15,540.44-21,445.81-8,466.87

Finding the Fourth Proportional to 15,540.44, 21,445.81 and 8,466.87

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Solution

The fourth proportional to 15,540.44, 21,445.81 and 8,466.87 is: 11,684.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.44 : 21,445.81 = 8,466.87 : x
  2. Step 2: Convert to fraction form
    15,540.44/21,445.81 = 8,466.87/x
  3. Step 3: Cross multiply
    15,540.44x = 21,445.81 × 8,466.87
  4. Step 4: Simplify right side
    15,540.44x = 181,578,799.25
  5. Step 5: Solve for x
    x = 181,578,799.25/15,540.44
  6. Step 6: Final answer
    x = 11,684.27

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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.