Home / 20,251.10-30,373.15-9,155.21

Finding the Fourth Proportional to 20,251.10, 30,373.15 and 9,155.21

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Solution

The fourth proportional to 20,251.10, 30,373.15 and 9,155.21 is: 13,731.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,251.10 : 30,373.15 = 9,155.21 : x
  2. Step 2: Convert to fraction form
    20,251.10/30,373.15 = 9,155.21/x
  3. Step 3: Cross multiply
    20,251.10x = 30,373.15 × 9,155.21
  4. Step 4: Simplify right side
    20,251.10x = 278,072,579.87
  5. Step 5: Solve for x
    x = 278,072,579.87/20,251.10
  6. Step 6: Final answer
    x = 13,731.23

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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.