Home / 12,919,173.61-19,381,540.64-6,445,730.15

Finding the Fourth Proportional to 12,919,173.61, 19,381,540.64 and 6,445,730.15

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Solution

The fourth proportional to 12,919,173.61, 19,381,540.64 and 6,445,730.15 is: 9,669,982.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919,173.61 : 19,381,540.64 = 6,445,730.15 : x
  2. Step 2: Convert to fraction form
    12,919,173.61/19,381,540.64 = 6,445,730.15/x
  3. Step 3: Cross multiply
    12,919,173.61x = 19,381,540.64 × 6,445,730.15
  4. Step 4: Simplify right side
    12,919,173.61x = 124,928,180,856,698.31
  5. Step 5: Solve for x
    x = 124,928,180,856,698.31/12,919,173.61
  6. Step 6: Final answer
    x = 9,669,982.36

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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.