Home / 15,447.41-21,317.38-8,373.78

Finding the Fourth Proportional to 15,447.41, 21,317.38 and 8,373.78

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Solution

The fourth proportional to 15,447.41, 21,317.38 and 8,373.78 is: 11,555.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.41 : 21,317.38 = 8,373.78 : x
  2. Step 2: Convert to fraction form
    15,447.41/21,317.38 = 8,373.78/x
  3. Step 3: Cross multiply
    15,447.41x = 21,317.38 × 8,373.78
  4. Step 4: Simplify right side
    15,447.41x = 178,507,029.36
  5. Step 5: Solve for x
    x = 178,507,029.36/15,447.41
  6. Step 6: Final answer
    x = 11,555.79

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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.