Home / 20,145.03-30,213.63-5,915.22

Finding the Fourth Proportional to 20,145.03, 30,213.63 and 5,915.22

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Solution

The fourth proportional to 20,145.03, 30,213.63 and 5,915.22 is: 8,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.03 : 30,213.63 = 5,915.22 : x
  2. Step 2: Convert to fraction form
    20,145.03/30,213.63 = 5,915.22/x
  3. Step 3: Cross multiply
    20,145.03x = 30,213.63 × 5,915.22
  4. Step 4: Simplify right side
    20,145.03x = 178,720,268.45
  5. Step 5: Solve for x
    x = 178,720,268.45/20,145.03
  6. Step 6: Final answer
    x = 8,871.68

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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.