Home / 20,431,638.15-30,646,571.48-5,078,602.90

Finding the Fourth Proportional to 20,431,638.15, 30,646,571.48 and 5,078,602.90

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Solution

The fourth proportional to 20,431,638.15, 30,646,571.48 and 5,078,602.90 is: 7,617,684.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431,638.15 : 30,646,571.48 = 5,078,602.90 : x
  2. Step 2: Convert to fraction form
    20,431,638.15/30,646,571.48 = 5,078,602.90/x
  3. Step 3: Cross multiply
    20,431,638.15x = 30,646,571.48 × 5,078,602.90
  4. Step 4: Simplify right side
    20,431,638.15x = 155,641,766,853,912.41
  5. Step 5: Solve for x
    x = 155,641,766,853,912.41/20,431,638.15
  6. Step 6: Final answer
    x = 7,617,684.19

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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.