Home / 18,123.20-27,184.80-4,976.90

Finding the Fourth Proportional to 18,123.20, 27,184.80 and 4,976.90

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Solution

The fourth proportional to 18,123.20, 27,184.80 and 4,976.90 is: 7,465.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.20 : 27,184.80 = 4,976.90 : x
  2. Step 2: Convert to fraction form
    18,123.20/27,184.80 = 4,976.90/x
  3. Step 3: Cross multiply
    18,123.20x = 27,184.80 × 4,976.90
  4. Step 4: Simplify right side
    18,123.20x = 135,296,031.12
  5. Step 5: Solve for x
    x = 135,296,031.12/18,123.20
  6. Step 6: Final answer
    x = 7,465.35

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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.