Home / 20,158.43-27,818.64-11,205.95

Finding the Fourth Proportional to 20,158.43, 27,818.64 and 11,205.95

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Solution

The fourth proportional to 20,158.43, 27,818.64 and 11,205.95 is: 15,464.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.43 : 27,818.64 = 11,205.95 : x
  2. Step 2: Convert to fraction form
    20,158.43/27,818.64 = 11,205.95/x
  3. Step 3: Cross multiply
    20,158.43x = 27,818.64 × 11,205.95
  4. Step 4: Simplify right side
    20,158.43x = 311,734,149.81
  5. Step 5: Solve for x
    x = 311,734,149.81/20,158.43
  6. Step 6: Final answer
    x = 15,464.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.