Home / 16,891.86-23,317.34-15,120.39

Finding the Fourth Proportional to 16,891.86, 23,317.34 and 15,120.39

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Solution

The fourth proportional to 16,891.86, 23,317.34 and 15,120.39 is: 20,872.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,891.86 : 23,317.34 = 15,120.39 : x
  2. Step 2: Convert to fraction form
    16,891.86/23,317.34 = 15,120.39/x
  3. Step 3: Cross multiply
    16,891.86x = 23,317.34 × 15,120.39
  4. Step 4: Simplify right side
    16,891.86x = 352,567,274.56
  5. Step 5: Solve for x
    x = 352,567,274.56/16,891.86
  6. Step 6: Final answer
    x = 20,872.02

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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.