Home / 20,330.60-30,474.02-13,288.46

Finding the Fourth Proportional to 20,330.60, 30,474.02 and 13,288.46

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Solution

The fourth proportional to 20,330.60, 30,474.02 and 13,288.46 is: 19,918.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.60 : 30,474.02 = 13,288.46 : x
  2. Step 2: Convert to fraction form
    20,330.60/30,474.02 = 13,288.46/x
  3. Step 3: Cross multiply
    20,330.60x = 30,474.02 × 13,288.46
  4. Step 4: Simplify right side
    20,330.60x = 404,952,676.66
  5. Step 5: Solve for x
    x = 404,952,676.66/20,330.60
  6. Step 6: Final answer
    x = 19,918.39

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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.