Home / 15,568.40-21,485.25-8,494.88

Finding the Fourth Proportional to 15,568.40, 21,485.25 and 8,494.88

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Solution

The fourth proportional to 15,568.40, 21,485.25 and 8,494.88 is: 11,723.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,568.40 : 21,485.25 = 8,494.88 : x
  2. Step 2: Convert to fraction form
    15,568.40/21,485.25 = 8,494.88/x
  3. Step 3: Cross multiply
    15,568.40x = 21,485.25 × 8,494.88
  4. Step 4: Simplify right side
    15,568.40x = 182,514,513.09
  5. Step 5: Solve for x
    x = 182,514,513.09/15,568.40
  6. Step 6: Final answer
    x = 11,723.39

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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.