Home / 15,764.59-21,754.87-8,691.67

Finding the Fourth Proportional to 15,764.59, 21,754.87 and 8,691.67

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Solution

The fourth proportional to 15,764.59, 21,754.87 and 8,691.67 is: 11,994.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,764.59 : 21,754.87 = 8,691.67 : x
  2. Step 2: Convert to fraction form
    15,764.59/21,754.87 = 8,691.67/x
  3. Step 3: Cross multiply
    15,764.59x = 21,754.87 × 8,691.67
  4. Step 4: Simplify right side
    15,764.59x = 189,086,150.93
  5. Step 5: Solve for x
    x = 189,086,150.93/15,764.59
  6. Step 6: Final answer
    x = 11,994.36

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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.