Home / 15,342.52-21,172.57-8,628.16

Finding the Fourth Proportional to 15,342.52, 21,172.57 and 8,628.16

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Solution

The fourth proportional to 15,342.52, 21,172.57 and 8,628.16 is: 11,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.52 : 21,172.57 = 8,628.16 : x
  2. Step 2: Convert to fraction form
    15,342.52/21,172.57 = 8,628.16/x
  3. Step 3: Cross multiply
    15,342.52x = 21,172.57 × 8,628.16
  4. Step 4: Simplify right side
    15,342.52x = 182,680,321.57
  5. Step 5: Solve for x
    x = 182,680,321.57/15,342.52
  6. Step 6: Final answer
    x = 11,906.80

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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.