Home / 20,534,520.45-30,791,401.16-12,017,415.81

Finding the Fourth Proportional to 20,534,520.45, 30,791,401.16 and 12,017,415.81

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Solution

The fourth proportional to 20,534,520.45, 30,791,401.16 and 12,017,415.81 is: 18,020,049.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,534,520.45 : 30,791,401.16 = 12,017,415.81 : x
  2. Step 2: Convert to fraction form
    20,534,520.45/30,791,401.16 = 12,017,415.81/x
  3. Step 3: Cross multiply
    20,534,520.45x = 30,791,401.16 × 12,017,415.81
  4. Step 4: Simplify right side
    20,534,520.45x = 370,033,071,052,149.31
  5. Step 5: Solve for x
    x = 370,033,071,052,149.31/20,534,520.45
  6. Step 6: Final answer
    x = 18,020,049.31

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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.