Home / 10,112.49-15,168.74-3,186.99

Finding the Fourth Proportional to 10,112.49, 15,168.74 and 3,186.99

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Solution

The fourth proportional to 10,112.49, 15,168.74 and 3,186.99 is: 4,780.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,112.49 : 15,168.74 = 3,186.99 : x
  2. Step 2: Convert to fraction form
    10,112.49/15,168.74 = 3,186.99/x
  3. Step 3: Cross multiply
    10,112.49x = 15,168.74 × 3,186.99
  4. Step 4: Simplify right side
    10,112.49x = 48,342,606.76
  5. Step 5: Solve for x
    x = 48,342,606.76/10,112.49
  6. Step 6: Final answer
    x = 4,780.49

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Half scale
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Double scale
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Similar ratio
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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.