Home / 15,447.44-21,317.28-8,373.76

Finding the Fourth Proportional to 15,447.44, 21,317.28 and 8,373.76

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Solution

The fourth proportional to 15,447.44, 21,317.28 and 8,373.76 is: 11,555.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.44 : 21,317.28 = 8,373.76 : x
  2. Step 2: Convert to fraction form
    15,447.44/21,317.28 = 8,373.76/x
  3. Step 3: Cross multiply
    15,447.44x = 21,317.28 × 8,373.76
  4. Step 4: Simplify right side
    15,447.44x = 178,505,786.57
  5. Step 5: Solve for x
    x = 178,505,786.57/15,447.44
  6. Step 6: Final answer
    x = 11,555.69

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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.