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Finding the Fourth Proportional to 13,814,954.20, 20,722,431.30 and 10,455,722.20

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Solution

The fourth proportional to 13,814,954.20, 20,722,431.30 and 10,455,722.20 is: 15,683,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,814,954.20 : 20,722,431.30 = 10,455,722.20 : x
  2. Step 2: Convert to fraction form
    13,814,954.20/20,722,431.30 = 10,455,722.20/x
  3. Step 3: Cross multiply
    13,814,954.20x = 20,722,431.30 × 10,455,722.20
  4. Step 4: Simplify right side
    13,814,954.20x = 216,667,984,981,384.84
  5. Step 5: Solve for x
    x = 216,667,984,981,384.84/13,814,954.20
  6. Step 6: Final answer
    x = 15,683,583.30

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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.