Home / 20,178.26-30,267.40-5,387.24

Finding the Fourth Proportional to 20,178.26, 30,267.40 and 5,387.24

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Solution

The fourth proportional to 20,178.26, 30,267.40 and 5,387.24 is: 8,080.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.26 : 30,267.40 = 5,387.24 : x
  2. Step 2: Convert to fraction form
    20,178.26/30,267.40 = 5,387.24/x
  3. Step 3: Cross multiply
    20,178.26x = 30,267.40 × 5,387.24
  4. Step 4: Simplify right side
    20,178.26x = 163,057,747.98
  5. Step 5: Solve for x
    x = 163,057,747.98/20,178.26
  6. Step 6: Final answer
    x = 8,080.86

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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.