Home / 12,115,355.70-18,181,890.90-8,070,499.20

Finding the Fourth Proportional to 12,115,355.70, 18,181,890.90 and 8,070,499.20

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Solution

The fourth proportional to 12,115,355.70, 18,181,890.90 and 8,070,499.20 is: 12,111,649.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115,355.70 : 18,181,890.90 = 8,070,499.20 : x
  2. Step 2: Convert to fraction form
    12,115,355.70/18,181,890.90 = 8,070,499.20/x
  3. Step 3: Cross multiply
    12,115,355.70x = 18,181,890.90 × 8,070,499.20
  4. Step 4: Simplify right side
    12,115,355.70x = 146,736,935,962,937.28
  5. Step 5: Solve for x
    x = 146,736,935,962,937.28/12,115,355.70
  6. Step 6: Final answer
    x = 12,111,649.02

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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.