Home / 12,432,728.70-18,651,615.39-3,911,083.20

Finding the Fourth Proportional to 12,432,728.70, 18,651,615.39 and 3,911,083.20

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Solution

The fourth proportional to 12,432,728.70, 18,651,615.39 and 3,911,083.20 is: 5,867,418.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,432,728.70 : 18,651,615.39 = 3,911,083.20 : x
  2. Step 2: Convert to fraction form
    12,432,728.70/18,651,615.39 = 3,911,083.20/x
  3. Step 3: Cross multiply
    12,432,728.70x = 18,651,615.39 × 3,911,083.20
  4. Step 4: Simplify right side
    12,432,728.70x = 72,948,019,604,690.45
  5. Step 5: Solve for x
    x = 72,948,019,604,690.45/12,432,728.70
  6. Step 6: Final answer
    x = 5,867,418.28

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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.