Home / 22,172.85-30,597.75-13,215.71

Finding the Fourth Proportional to 22,172.85, 30,597.75 and 13,215.71

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Solution

The fourth proportional to 22,172.85, 30,597.75 and 13,215.71 is: 18,237.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,172.85 : 30,597.75 = 13,215.71 : x
  2. Step 2: Convert to fraction form
    22,172.85/30,597.75 = 13,215.71/x
  3. Step 3: Cross multiply
    22,172.85x = 30,597.75 × 13,215.71
  4. Step 4: Simplify right side
    22,172.85x = 404,370,837.66
  5. Step 5: Solve for x
    x = 404,370,837.66/22,172.85
  6. Step 6: Final answer
    x = 18,237.21

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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.