Home / 20,520.41-30,780.62-4,938.03

Finding the Fourth Proportional to 20,520.41, 30,780.62 and 4,938.03

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Solution

The fourth proportional to 20,520.41, 30,780.62 and 4,938.03 is: 7,407.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520.41 : 30,780.62 = 4,938.03 : x
  2. Step 2: Convert to fraction form
    20,520.41/30,780.62 = 4,938.03/x
  3. Step 3: Cross multiply
    20,520.41x = 30,780.62 × 4,938.03
  4. Step 4: Simplify right side
    20,520.41x = 151,995,600.29
  5. Step 5: Solve for x
    x = 151,995,600.29/20,520.41
  6. Step 6: Final answer
    x = 7,407.05

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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.