Home / 10,184.35-15,279.86-6,431.80

Finding the Fourth Proportional to 10,184.35, 15,279.86 and 6,431.80

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Solution

The fourth proportional to 10,184.35, 15,279.86 and 6,431.80 is: 9,649.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,184.35 : 15,279.86 = 6,431.80 : x
  2. Step 2: Convert to fraction form
    10,184.35/15,279.86 = 6,431.80/x
  3. Step 3: Cross multiply
    10,184.35x = 15,279.86 × 6,431.80
  4. Step 4: Simplify right side
    10,184.35x = 98,277,003.55
  5. Step 5: Solve for x
    x = 98,277,003.55/10,184.35
  6. Step 6: Final answer
    x = 9,649.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.