Home / 10,142.38-15,220.38-3,568.60

Finding the Fourth Proportional to 10,142.38, 15,220.38 and 3,568.60

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Solution

The fourth proportional to 10,142.38, 15,220.38 and 3,568.60 is: 5,355.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.38 : 15,220.38 = 3,568.60 : x
  2. Step 2: Convert to fraction form
    10,142.38/15,220.38 = 3,568.60/x
  3. Step 3: Cross multiply
    10,142.38x = 15,220.38 × 3,568.60
  4. Step 4: Simplify right side
    10,142.38x = 54,315,448.07
  5. Step 5: Solve for x
    x = 54,315,448.07/10,142.38
  6. Step 6: Final answer
    x = 5,355.30

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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.