Home / 21,856.23-30,142.94-18,469.62

Finding the Fourth Proportional to 21,856.23, 30,142.94 and 18,469.62

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Solution

The fourth proportional to 21,856.23, 30,142.94 and 18,469.62 is: 25,472.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,856.23 : 30,142.94 = 18,469.62 : x
  2. Step 2: Convert to fraction form
    21,856.23/30,142.94 = 18,469.62/x
  3. Step 3: Cross multiply
    21,856.23x = 30,142.94 × 18,469.62
  4. Step 4: Simplify right side
    21,856.23x = 556,728,555.13
  5. Step 5: Solve for x
    x = 556,728,555.13/21,856.23
  6. Step 6: Final answer
    x = 25,472.30

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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.