Home / 10,128.65-15,193.44-3,109.73

Finding the Fourth Proportional to 10,128.65, 15,193.44 and 3,109.73

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Solution

The fourth proportional to 10,128.65, 15,193.44 and 3,109.73 is: 4,664.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.65 : 15,193.44 = 3,109.73 : x
  2. Step 2: Convert to fraction form
    10,128.65/15,193.44 = 3,109.73/x
  3. Step 3: Cross multiply
    10,128.65x = 15,193.44 × 3,109.73
  4. Step 4: Simplify right side
    10,128.65x = 47,247,420.20
  5. Step 5: Solve for x
    x = 47,247,420.20/10,128.65
  6. Step 6: Final answer
    x = 4,664.73

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Double scale
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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.