Home / 20,796.55-31,173.18-13,305.39

Finding the Fourth Proportional to 20,796.55, 31,173.18 and 13,305.39

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Solution

The fourth proportional to 20,796.55, 31,173.18 and 13,305.39 is: 19,944.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.55 : 31,173.18 = 13,305.39 : x
  2. Step 2: Convert to fraction form
    20,796.55/31,173.18 = 13,305.39/x
  3. Step 3: Cross multiply
    20,796.55x = 31,173.18 × 13,305.39
  4. Step 4: Simplify right side
    20,796.55x = 414,771,275.74
  5. Step 5: Solve for x
    x = 414,771,275.74/20,796.55
  6. Step 6: Final answer
    x = 19,944.24

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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.