Home / 15,904.89-21,958.28-9,944.64

Finding the Fourth Proportional to 15,904.89, 21,958.28 and 9,944.64

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Solution

The fourth proportional to 15,904.89, 21,958.28 and 9,944.64 is: 13,729.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,904.89 : 21,958.28 = 9,944.64 : x
  2. Step 2: Convert to fraction form
    15,904.89/21,958.28 = 9,944.64/x
  3. Step 3: Cross multiply
    15,904.89x = 21,958.28 × 9,944.64
  4. Step 4: Simplify right side
    15,904.89x = 218,367,189.62
  5. Step 5: Solve for x
    x = 218,367,189.62/15,904.89
  6. Step 6: Final answer
    x = 13,729.56

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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.