Home / 15,589.64-21,512.58-8,514.56

Finding the Fourth Proportional to 15,589.64, 21,512.58 and 8,514.56

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Solution

The fourth proportional to 15,589.64, 21,512.58 and 8,514.56 is: 11,749.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,589.64 : 21,512.58 = 8,514.56 : x
  2. Step 2: Convert to fraction form
    15,589.64/21,512.58 = 8,514.56/x
  3. Step 3: Cross multiply
    15,589.64x = 21,512.58 × 8,514.56
  4. Step 4: Simplify right side
    15,589.64x = 183,170,153.16
  5. Step 5: Solve for x
    x = 183,170,153.16/15,589.64
  6. Step 6: Final answer
    x = 11,749.48

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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.