Home / 15,338.72-21,165.44-8,623.28

Finding the Fourth Proportional to 15,338.72, 21,165.44 and 8,623.28

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Solution

The fourth proportional to 15,338.72, 21,165.44 and 8,623.28 is: 11,899.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,338.72 : 21,165.44 = 8,623.28 : x
  2. Step 2: Convert to fraction form
    15,338.72/21,165.44 = 8,623.28/x
  3. Step 3: Cross multiply
    15,338.72x = 21,165.44 × 8,623.28
  4. Step 4: Simplify right side
    15,338.72x = 182,515,515.44
  5. Step 5: Solve for x
    x = 182,515,515.44/15,338.72
  6. Step 6: Final answer
    x = 11,899.01

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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.