Home / 18,772.34-28,138.26-12,203.24

Finding the Fourth Proportional to 18,772.34, 28,138.26 and 12,203.24

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Solution

The fourth proportional to 18,772.34, 28,138.26 and 12,203.24 is: 18,291.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.34 : 28,138.26 = 12,203.24 : x
  2. Step 2: Convert to fraction form
    18,772.34/28,138.26 = 12,203.24/x
  3. Step 3: Cross multiply
    18,772.34x = 28,138.26 × 12,203.24
  4. Step 4: Simplify right side
    18,772.34x = 343,377,939.96
  5. Step 5: Solve for x
    x = 343,377,939.96/18,772.34
  6. Step 6: Final answer
    x = 18,291.70

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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.