Home / 22,215.09-30,656.75-12,143.53

Finding the Fourth Proportional to 22,215.09, 30,656.75 and 12,143.53

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Solution

The fourth proportional to 22,215.09, 30,656.75 and 12,143.53 is: 16,758.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,215.09 : 30,656.75 = 12,143.53 : x
  2. Step 2: Convert to fraction form
    22,215.09/30,656.75 = 12,143.53/x
  3. Step 3: Cross multiply
    22,215.09x = 30,656.75 × 12,143.53
  4. Step 4: Simplify right side
    22,215.09x = 372,281,163.33
  5. Step 5: Solve for x
    x = 372,281,163.33/22,215.09
  6. Step 6: Final answer
    x = 16,758.03

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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.