Home / 10,145.58-15,218.37-3,220.62

Finding the Fourth Proportional to 10,145.58, 15,218.37 and 3,220.62

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Solution

The fourth proportional to 10,145.58, 15,218.37 and 3,220.62 is: 4,830.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,145.58 : 15,218.37 = 3,220.62 : x
  2. Step 2: Convert to fraction form
    10,145.58/15,218.37 = 3,220.62/x
  3. Step 3: Cross multiply
    10,145.58x = 15,218.37 × 3,220.62
  4. Step 4: Simplify right side
    10,145.58x = 49,012,586.79
  5. Step 5: Solve for x
    x = 49,012,586.79/10,145.58
  6. Step 6: Final answer
    x = 4,830.93

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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.