Home / 20,453.48-30,660.78-13,037.12

Finding the Fourth Proportional to 20,453.48, 30,660.78 and 13,037.12

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Solution

The fourth proportional to 20,453.48, 30,660.78 and 13,037.12 is: 19,543.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.48 : 30,660.78 = 13,037.12 : x
  2. Step 2: Convert to fraction form
    20,453.48/30,660.78 = 13,037.12/x
  3. Step 3: Cross multiply
    20,453.48x = 30,660.78 × 13,037.12
  4. Step 4: Simplify right side
    20,453.48x = 399,728,268.15
  5. Step 5: Solve for x
    x = 399,728,268.15/20,453.48
  6. Step 6: Final answer
    x = 19,543.29

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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.