Home / 12,121,684.20-18,183,401.10-7,319,032.20

Finding the Fourth Proportional to 12,121,684.20, 18,183,401.10 and 7,319,032.20

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Solution

The fourth proportional to 12,121,684.20, 18,183,401.10 and 7,319,032.20 is: 10,979,076.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121,684.20 : 18,183,401.10 = 7,319,032.20 : x
  2. Step 2: Convert to fraction form
    12,121,684.20/18,183,401.10 = 7,319,032.20/x
  3. Step 3: Cross multiply
    12,121,684.20x = 18,183,401.10 × 7,319,032.20
  4. Step 4: Simplify right side
    12,121,684.20x = 133,084,898,156,415.44
  5. Step 5: Solve for x
    x = 133,084,898,156,415.44/12,121,684.20
  6. Step 6: Final answer
    x = 10,979,076.50

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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.