Home / 12,919,172.61-19,381,539.14-6,445,729.15

Finding the Fourth Proportional to 12,919,172.61, 19,381,539.14 and 6,445,729.15

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Solution

The fourth proportional to 12,919,172.61, 19,381,539.14 and 6,445,729.15 is: 9,669,980.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919,172.61 : 19,381,539.14 = 6,445,729.15 : x
  2. Step 2: Convert to fraction form
    12,919,172.61/19,381,539.14 = 6,445,729.15/x
  3. Step 3: Cross multiply
    12,919,172.61x = 19,381,539.14 × 6,445,729.15
  4. Step 4: Simplify right side
    12,919,172.61x = 124,928,151,840,942.25
  5. Step 5: Solve for x
    x = 124,928,151,840,942.25/12,919,172.61
  6. Step 6: Final answer
    x = 9,669,980.86

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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.