Home / 15,209.76-20,989.26-8,495.49

Finding the Fourth Proportional to 15,209.76, 20,989.26 and 8,495.49

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Solution

The fourth proportional to 15,209.76, 20,989.26 and 8,495.49 is: 11,723.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.76 : 20,989.26 = 8,495.49 : x
  2. Step 2: Convert to fraction form
    15,209.76/20,989.26 = 8,495.49/x
  3. Step 3: Cross multiply
    15,209.76x = 20,989.26 × 8,495.49
  4. Step 4: Simplify right side
    15,209.76x = 178,314,048.44
  5. Step 5: Solve for x
    x = 178,314,048.44/15,209.76
  6. Step 6: Final answer
    x = 11,723.66

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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.