Home / 12,993,913.40-19,490,870.10-11,860,172.60

Finding the Fourth Proportional to 12,993,913.40, 19,490,870.10 and 11,860,172.60

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Solution

The fourth proportional to 12,993,913.40, 19,490,870.10 and 11,860,172.60 is: 17,790,258.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,993,913.40 : 19,490,870.10 = 11,860,172.60 : x
  2. Step 2: Convert to fraction form
    12,993,913.40/19,490,870.10 = 11,860,172.60/x
  3. Step 3: Cross multiply
    12,993,913.40x = 19,490,870.10 × 11,860,172.60
  4. Step 4: Simplify right side
    12,993,913.40x = 231,165,083,510,179.28
  5. Step 5: Solve for x
    x = 231,165,083,510,179.28/12,993,913.40
  6. Step 6: Final answer
    x = 17,790,258.90

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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.