Home / 15,759.82-21,748.56-8,589.74

Finding the Fourth Proportional to 15,759.82, 21,748.56 and 8,589.74

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Solution

The fourth proportional to 15,759.82, 21,748.56 and 8,589.74 is: 11,853.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,759.82 : 21,748.56 = 8,589.74 : x
  2. Step 2: Convert to fraction form
    15,759.82/21,748.56 = 8,589.74/x
  3. Step 3: Cross multiply
    15,759.82x = 21,748.56 × 8,589.74
  4. Step 4: Simplify right side
    15,759.82x = 186,814,475.77
  5. Step 5: Solve for x
    x = 186,814,475.77/15,759.82
  6. Step 6: Final answer
    x = 11,853.85

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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.