Home / 15,344.27-21,172.61-8,629.49

Finding the Fourth Proportional to 15,344.27, 21,172.61 and 8,629.49

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Solution

The fourth proportional to 15,344.27, 21,172.61 and 8,629.49 is: 11,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,344.27 : 21,172.61 = 8,629.49 : x
  2. Step 2: Convert to fraction form
    15,344.27/21,172.61 = 8,629.49/x
  3. Step 3: Cross multiply
    15,344.27x = 21,172.61 × 8,629.49
  4. Step 4: Simplify right side
    15,344.27x = 182,708,783.12
  5. Step 5: Solve for x
    x = 182,708,783.12/15,344.27
  6. Step 6: Final answer
    x = 11,907.30

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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.