Home / 12,126.20-18,189.30-4,730.90

Finding the Fourth Proportional to 12,126.20, 18,189.30 and 4,730.90

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Solution

The fourth proportional to 12,126.20, 18,189.30 and 4,730.90 is: 7,096.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.20 : 18,189.30 = 4,730.90 : x
  2. Step 2: Convert to fraction form
    12,126.20/18,189.30 = 4,730.90/x
  3. Step 3: Cross multiply
    12,126.20x = 18,189.30 × 4,730.90
  4. Step 4: Simplify right side
    12,126.20x = 86,051,759.37
  5. Step 5: Solve for x
    x = 86,051,759.37/12,126.20
  6. Step 6: Final answer
    x = 7,096.35

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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.