Home / 12,101,966.20-18,128,066.10-8,319,719.80

Finding the Fourth Proportional to 12,101,966.20, 18,128,066.10 and 8,319,719.80

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Solution

The fourth proportional to 12,101,966.20, 18,128,066.10 and 8,319,719.80 is: 12,462,473.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101,966.20 : 18,128,066.10 = 8,319,719.80 : x
  2. Step 2: Convert to fraction form
    12,101,966.20/18,128,066.10 = 8,319,719.80/x
  3. Step 3: Cross multiply
    12,101,966.20x = 18,128,066.10 × 8,319,719.80
  4. Step 4: Simplify right side
    12,101,966.20x = 150,820,430,467,878.78
  5. Step 5: Solve for x
    x = 150,820,430,467,878.78/12,101,966.20
  6. Step 6: Final answer
    x = 12,462,473.29

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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.