Home / 28,183.14-42,289.29-13,389.30

Finding the Fourth Proportional to 28,183.14, 42,289.29 and 13,389.30

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Solution

The fourth proportional to 28,183.14, 42,289.29 and 13,389.30 is: 20,090.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,183.14 : 42,289.29 = 13,389.30 : x
  2. Step 2: Convert to fraction form
    28,183.14/42,289.29 = 13,389.30/x
  3. Step 3: Cross multiply
    28,183.14x = 42,289.29 × 13,389.30
  4. Step 4: Simplify right side
    28,183.14x = 566,223,990.60
  5. Step 5: Solve for x
    x = 566,223,990.60/28,183.14
  6. Step 6: Final answer
    x = 20,090.88

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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.