Home / 12,459,912.40-18,660,377.40-8,449,109.20

Finding the Fourth Proportional to 12,459,912.40, 18,660,377.40 and 8,449,109.20

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Solution

The fourth proportional to 12,459,912.40, 18,660,377.40 and 8,449,109.20 is: 12,653,665.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459,912.40 : 18,660,377.40 = 8,449,109.20 : x
  2. Step 2: Convert to fraction form
    12,459,912.40/18,660,377.40 = 8,449,109.20/x
  3. Step 3: Cross multiply
    12,459,912.40x = 18,660,377.40 × 8,449,109.20
  4. Step 4: Simplify right side
    12,459,912.40x = 157,663,566,365,812.06
  5. Step 5: Solve for x
    x = 157,663,566,365,812.06/12,459,912.40
  6. Step 6: Final answer
    x = 12,653,665.72

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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.