Home / 20,960.88-31,449.96-15,442.08

Finding the Fourth Proportional to 20,960.88, 31,449.96 and 15,442.08

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Solution

The fourth proportional to 20,960.88, 31,449.96 and 15,442.08 is: 23,169.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.88 : 31,449.96 = 15,442.08 : x
  2. Step 2: Convert to fraction form
    20,960.88/31,449.96 = 15,442.08/x
  3. Step 3: Cross multiply
    20,960.88x = 31,449.96 × 15,442.08
  4. Step 4: Simplify right side
    20,960.88x = 485,652,798.32
  5. Step 5: Solve for x
    x = 485,652,798.32/20,960.88
  6. Step 6: Final answer
    x = 23,169.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.