Home / 12,412.22-18,622.17-3,979.98

Finding the Fourth Proportional to 12,412.22, 18,622.17 and 3,979.98

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Solution

The fourth proportional to 12,412.22, 18,622.17 and 3,979.98 is: 5,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,412.22 : 18,622.17 = 3,979.98 : x
  2. Step 2: Convert to fraction form
    12,412.22/18,622.17 = 3,979.98/x
  3. Step 3: Cross multiply
    12,412.22x = 18,622.17 × 3,979.98
  4. Step 4: Simplify right side
    12,412.22x = 74,115,864.16
  5. Step 5: Solve for x
    x = 74,115,864.16/12,412.22
  6. Step 6: Final answer
    x = 5,971.20

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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.