Home / 20,615.28-30,915.60-7,464.24

Finding the Fourth Proportional to 20,615.28, 30,915.60 and 7,464.24

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Solution

The fourth proportional to 20,615.28, 30,915.60 and 7,464.24 is: 11,193.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.28 : 30,915.60 = 7,464.24 : x
  2. Step 2: Convert to fraction form
    20,615.28/30,915.60 = 7,464.24/x
  3. Step 3: Cross multiply
    20,615.28x = 30,915.60 × 7,464.24
  4. Step 4: Simplify right side
    20,615.28x = 230,761,458.14
  5. Step 5: Solve for x
    x = 230,761,458.14/20,615.28
  6. Step 6: Final answer
    x = 11,193.71

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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.