Home / 20,627.57-30,915.95-8,135.03

Finding the Fourth Proportional to 20,627.57, 30,915.95 and 8,135.03

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Solution

The fourth proportional to 20,627.57, 30,915.95 and 8,135.03 is: 12,192.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.57 : 30,915.95 = 8,135.03 : x
  2. Step 2: Convert to fraction form
    20,627.57/30,915.95 = 8,135.03/x
  3. Step 3: Cross multiply
    20,627.57x = 30,915.95 × 8,135.03
  4. Step 4: Simplify right side
    20,627.57x = 251,502,217.34
  5. Step 5: Solve for x
    x = 251,502,217.34/20,627.57
  6. Step 6: Final answer
    x = 12,192.53

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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.