Home / 28,654.16-42,939.70-20,350.44

Finding the Fourth Proportional to 28,654.16, 42,939.70 and 20,350.44

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Solution

The fourth proportional to 28,654.16, 42,939.70 and 20,350.44 is: 30,496.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,654.16 : 42,939.70 = 20,350.44 : x
  2. Step 2: Convert to fraction form
    28,654.16/42,939.70 = 20,350.44/x
  3. Step 3: Cross multiply
    28,654.16x = 42,939.70 × 20,350.44
  4. Step 4: Simplify right side
    28,654.16x = 873,841,788.47
  5. Step 5: Solve for x
    x = 873,841,788.47/28,654.16
  6. Step 6: Final answer
    x = 30,496.16

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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.