Home / 21,824.08-30,120.04-13,324.40

Finding the Fourth Proportional to 21,824.08, 30,120.04 and 13,324.40

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Solution

The fourth proportional to 21,824.08, 30,120.04 and 13,324.40 is: 18,389.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,824.08 : 30,120.04 = 13,324.40 : x
  2. Step 2: Convert to fraction form
    21,824.08/30,120.04 = 13,324.40/x
  3. Step 3: Cross multiply
    21,824.08x = 30,120.04 × 13,324.40
  4. Step 4: Simplify right side
    21,824.08x = 401,331,460.98
  5. Step 5: Solve for x
    x = 401,331,460.98/21,824.08
  6. Step 6: Final answer
    x = 18,389.39

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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.