Home / 22,138.62-30,548.01-13,185.90

Finding the Fourth Proportional to 22,138.62, 30,548.01 and 13,185.90

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Solution

The fourth proportional to 22,138.62, 30,548.01 and 13,185.90 is: 18,194.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,138.62 : 30,548.01 = 13,185.90 : x
  2. Step 2: Convert to fraction form
    22,138.62/30,548.01 = 13,185.90/x
  3. Step 3: Cross multiply
    22,138.62x = 30,548.01 × 13,185.90
  4. Step 4: Simplify right side
    22,138.62x = 402,803,005.06
  5. Step 5: Solve for x
    x = 402,803,005.06/22,138.62
  6. Step 6: Final answer
    x = 18,194.59

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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.