Home / 20,729.80-31,094.70-19,822.60

Finding the Fourth Proportional to 20,729.80, 31,094.70 and 19,822.60

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Solution

The fourth proportional to 20,729.80, 31,094.70 and 19,822.60 is: 29,733.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.80 : 31,094.70 = 19,822.60 : x
  2. Step 2: Convert to fraction form
    20,729.80/31,094.70 = 19,822.60/x
  3. Step 3: Cross multiply
    20,729.80x = 31,094.70 × 19,822.60
  4. Step 4: Simplify right side
    20,729.80x = 616,377,800.22
  5. Step 5: Solve for x
    x = 616,377,800.22/20,729.80
  6. Step 6: Final answer
    x = 29,733.90

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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.