Home / 12,189.20-18,284.40-6,357.20

Finding the Fourth Proportional to 12,189.20, 18,284.40 and 6,357.20

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Solution

The fourth proportional to 12,189.20, 18,284.40 and 6,357.20 is: 9,536.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,189.20 : 18,284.40 = 6,357.20 : x
  2. Step 2: Convert to fraction form
    12,189.20/18,284.40 = 6,357.20/x
  3. Step 3: Cross multiply
    12,189.20x = 18,284.40 × 6,357.20
  4. Step 4: Simplify right side
    12,189.20x = 116,237,587.68
  5. Step 5: Solve for x
    x = 116,237,587.68/12,189.20
  6. Step 6: Final answer
    x = 9,536.11

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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.