Home / 15,200.16-20,976.24-8,486.39

Finding the Fourth Proportional to 15,200.16, 20,976.24 and 8,486.39

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Solution

The fourth proportional to 15,200.16, 20,976.24 and 8,486.39 is: 11,711.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.16 : 20,976.24 = 8,486.39 : x
  2. Step 2: Convert to fraction form
    15,200.16/20,976.24 = 8,486.39/x
  3. Step 3: Cross multiply
    15,200.16x = 20,976.24 × 8,486.39
  4. Step 4: Simplify right side
    15,200.16x = 178,012,448.49
  5. Step 5: Solve for x
    x = 178,012,448.49/15,200.16
  6. Step 6: Final answer
    x = 11,711.22

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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.