Home / 12,620.68-17,415.91-7,317.22

Finding the Fourth Proportional to 12,620.68, 17,415.91 and 7,317.22

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Solution

The fourth proportional to 12,620.68, 17,415.91 and 7,317.22 is: 10,097.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,620.68 : 17,415.91 = 7,317.22 : x
  2. Step 2: Convert to fraction form
    12,620.68/17,415.91 = 7,317.22/x
  3. Step 3: Cross multiply
    12,620.68x = 17,415.91 × 7,317.22
  4. Step 4: Simplify right side
    12,620.68x = 127,436,044.97
  5. Step 5: Solve for x
    x = 127,436,044.97/12,620.68
  6. Step 6: Final answer
    x = 10,097.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.