Home / 22,418.08-30,937.04-12,987.36

Finding the Fourth Proportional to 22,418.08, 30,937.04 and 12,987.36

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Solution

The fourth proportional to 22,418.08, 30,937.04 and 12,987.36 is: 17,922.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,418.08 : 30,937.04 = 12,987.36 : x
  2. Step 2: Convert to fraction form
    22,418.08/30,937.04 = 12,987.36/x
  3. Step 3: Cross multiply
    22,418.08x = 30,937.04 × 12,987.36
  4. Step 4: Simplify right side
    22,418.08x = 401,790,475.81
  5. Step 5: Solve for x
    x = 401,790,475.81/22,418.08
  6. Step 6: Final answer
    x = 17,922.61

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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.