Home / 22,288.40-30,757.60-13,219.87

Finding the Fourth Proportional to 22,288.40, 30,757.60 and 13,219.87

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Solution

The fourth proportional to 22,288.40, 30,757.60 and 13,219.87 is: 18,243.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,288.40 : 30,757.60 = 13,219.87 : x
  2. Step 2: Convert to fraction form
    22,288.40/30,757.60 = 13,219.87/x
  3. Step 3: Cross multiply
    22,288.40x = 30,757.60 × 13,219.87
  4. Step 4: Simplify right side
    22,288.40x = 406,611,330.52
  5. Step 5: Solve for x
    x = 406,611,330.52/22,288.40
  6. Step 6: Final answer
    x = 18,243.18

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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.