Home / 13,206,603.40-19,809,905.10-12,072,862.60

Finding the Fourth Proportional to 13,206,603.40, 19,809,905.10 and 12,072,862.60

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Solution

The fourth proportional to 13,206,603.40, 19,809,905.10 and 12,072,862.60 is: 18,109,293.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206,603.40 : 19,809,905.10 = 12,072,862.60 : x
  2. Step 2: Convert to fraction form
    13,206,603.40/19,809,905.10 = 12,072,862.60/x
  3. Step 3: Cross multiply
    13,206,603.40x = 19,809,905.10 × 12,072,862.60
  4. Step 4: Simplify right side
    13,206,603.40x = 239,162,262,391,339.28
  5. Step 5: Solve for x
    x = 239,162,262,391,339.28/13,206,603.40
  6. Step 6: Final answer
    x = 18,109,293.90

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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.