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Finding the Fourth Proportional to 13,600,998.40, 20,401,497.60 and 10,518,640.60

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Solution

The fourth proportional to 13,600,998.40, 20,401,497.60 and 10,518,640.60 is: 15,777,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,600,998.40 : 20,401,497.60 = 10,518,640.60 : x
  2. Step 2: Convert to fraction form
    13,600,998.40/20,401,497.60 = 10,518,640.60/x
  3. Step 3: Cross multiply
    13,600,998.40x = 20,401,497.60 × 10,518,640.60
  4. Step 4: Simplify right side
    13,600,998.40x = 214,596,020,956,162.56
  5. Step 5: Solve for x
    x = 214,596,020,956,162.56/13,600,998.40
  6. Step 6: Final answer
    x = 15,777,960.90

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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.