Home / 10,129.53-15,190.65-4,286.55

Finding the Fourth Proportional to 10,129.53, 15,190.65 and 4,286.55

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Solution

The fourth proportional to 10,129.53, 15,190.65 and 4,286.55 is: 6,428.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.53 : 15,190.65 = 4,286.55 : x
  2. Step 2: Convert to fraction form
    10,129.53/15,190.65 = 4,286.55/x
  3. Step 3: Cross multiply
    10,129.53x = 15,190.65 × 4,286.55
  4. Step 4: Simplify right side
    10,129.53x = 65,115,480.76
  5. Step 5: Solve for x
    x = 65,115,480.76/10,129.53
  6. Step 6: Final answer
    x = 6,428.28

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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.