Home / 15,447.76-21,317.91-8,374.16

Finding the Fourth Proportional to 15,447.76, 21,317.91 and 8,374.16

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Solution

The fourth proportional to 15,447.76, 21,317.91 and 8,374.16 is: 11,556.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.76 : 21,317.91 = 8,374.16 : x
  2. Step 2: Convert to fraction form
    15,447.76/21,317.91 = 8,374.16/x
  3. Step 3: Cross multiply
    15,447.76x = 21,317.91 × 8,374.16
  4. Step 4: Simplify right side
    15,447.76x = 178,519,589.21
  5. Step 5: Solve for x
    x = 178,519,589.21/15,447.76
  6. Step 6: Final answer
    x = 11,556.34

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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.