Home / 13,206,645.90-19,809,968.85-12,072,905.10

Finding the Fourth Proportional to 13,206,645.90, 19,809,968.85 and 12,072,905.10

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Solution

The fourth proportional to 13,206,645.90, 19,809,968.85 and 12,072,905.10 is: 18,109,357.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206,645.90 : 19,809,968.85 = 12,072,905.10 : x
  2. Step 2: Convert to fraction form
    13,206,645.90/19,809,968.85 = 12,072,905.10/x
  3. Step 3: Cross multiply
    13,206,645.90x = 19,809,968.85 × 12,072,905.10
  4. Step 4: Simplify right side
    13,206,645.90x = 239,163,873,960,006.16
  5. Step 5: Solve for x
    x = 239,163,873,960,006.16/13,206,645.90
  6. Step 6: Final answer
    x = 18,109,357.65

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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.