Home / 12,918,739.72-19,377,465.36-4,831,120.72

Finding the Fourth Proportional to 12,918,739.72, 19,377,465.36 and 4,831,120.72

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Solution

The fourth proportional to 12,918,739.72, 19,377,465.36 and 4,831,120.72 is: 7,246,440.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918,739.72 : 19,377,465.36 = 4,831,120.72 : x
  2. Step 2: Convert to fraction form
    12,918,739.72/19,377,465.36 = 4,831,120.72/x
  3. Step 3: Cross multiply
    12,918,739.72x = 19,377,465.36 × 4,831,120.72
  4. Step 4: Simplify right side
    12,918,739.72x = 93,614,874,401,778.25
  5. Step 5: Solve for x
    x = 93,614,874,401,778.25/12,918,739.72
  6. Step 6: Final answer
    x = 7,246,440.17

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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.