Home / 13,212,911.20-19,831,808.40-8,174,063.20

Finding the Fourth Proportional to 13,212,911.20, 19,831,808.40 and 8,174,063.20

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Solution

The fourth proportional to 13,212,911.20, 19,831,808.40 and 8,174,063.20 is: 12,268,791.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212,911.20 : 19,831,808.40 = 8,174,063.20 : x
  2. Step 2: Convert to fraction form
    13,212,911.20/19,831,808.40 = 8,174,063.20/x
  3. Step 3: Cross multiply
    13,212,911.20x = 19,831,808.40 × 8,174,063.20
  4. Step 4: Simplify right side
    13,212,911.20x = 162,106,455,231,890.88
  5. Step 5: Solve for x
    x = 162,106,455,231,890.88/13,212,911.20
  6. Step 6: Final answer
    x = 12,268,791.70

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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.