Home / 12,766,342.40-19,163,510.40-7,979,436.80

Finding the Fourth Proportional to 12,766,342.40, 19,163,510.40 and 7,979,436.80

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Solution

The fourth proportional to 12,766,342.40, 19,163,510.40 and 7,979,436.80 is: 11,977,903.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,766,342.40 : 19,163,510.40 = 7,979,436.80 : x
  2. Step 2: Convert to fraction form
    12,766,342.40/19,163,510.40 = 7,979,436.80/x
  3. Step 3: Cross multiply
    12,766,342.40x = 19,163,510.40 × 7,979,436.80
  4. Step 4: Simplify right side
    12,766,342.40x = 152,914,020,102,942.72
  5. Step 5: Solve for x
    x = 152,914,020,102,942.72/12,766,342.40
  6. Step 6: Final answer
    x = 11,977,903.72

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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.