Home / 15,625.44-21,563.01-8,455.32

Finding the Fourth Proportional to 15,625.44, 21,563.01 and 8,455.32

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Solution

The fourth proportional to 15,625.44, 21,563.01 and 8,455.32 is: 11,668.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,625.44 : 21,563.01 = 8,455.32 : x
  2. Step 2: Convert to fraction form
    15,625.44/21,563.01 = 8,455.32/x
  3. Step 3: Cross multiply
    15,625.44x = 21,563.01 × 8,455.32
  4. Step 4: Simplify right side
    15,625.44x = 182,322,149.71
  5. Step 5: Solve for x
    x = 182,322,149.71/15,625.44
  6. Step 6: Final answer
    x = 11,668.29

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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.