Home / 21,245.52-31,933.08-20,746.56

Finding the Fourth Proportional to 21,245.52, 31,933.08 and 20,746.56

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Solution

The fourth proportional to 21,245.52, 31,933.08 and 20,746.56 is: 31,183.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.52 : 31,933.08 = 20,746.56 : x
  2. Step 2: Convert to fraction form
    21,245.52/31,933.08 = 20,746.56/x
  3. Step 3: Cross multiply
    21,245.52x = 31,933.08 × 20,746.56
  4. Step 4: Simplify right side
    21,245.52x = 662,501,560.20
  5. Step 5: Solve for x
    x = 662,501,560.20/21,245.52
  6. Step 6: Final answer
    x = 31,183.12

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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.