Home / 21,858.92-30,160.68-13,898.24

Finding the Fourth Proportional to 21,858.92, 30,160.68 and 13,898.24

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Solution

The fourth proportional to 21,858.92, 30,160.68 and 13,898.24 is: 19,176.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,858.92 : 30,160.68 = 13,898.24 : x
  2. Step 2: Convert to fraction form
    21,858.92/30,160.68 = 13,898.24/x
  3. Step 3: Cross multiply
    21,858.92x = 30,160.68 × 13,898.24
  4. Step 4: Simplify right side
    21,858.92x = 419,180,369.20
  5. Step 5: Solve for x
    x = 419,180,369.20/21,858.92
  6. Step 6: Final answer
    x = 19,176.63

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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.