Home / 19,187,712.90-28,781,569.35-12,021,351.30

Finding the Fourth Proportional to 19,187,712.90, 28,781,569.35 and 12,021,351.30

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Solution

The fourth proportional to 19,187,712.90, 28,781,569.35 and 12,021,351.30 is: 18,032,026.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,187,712.90 : 28,781,569.35 = 12,021,351.30 : x
  2. Step 2: Convert to fraction form
    19,187,712.90/28,781,569.35 = 12,021,351.30/x
  3. Step 3: Cross multiply
    19,187,712.90x = 28,781,569.35 × 12,021,351.30
  4. Step 4: Simplify right side
    19,187,712.90x = 345,993,356,121,662.69
  5. Step 5: Solve for x
    x = 345,993,356,121,662.69/19,187,712.90
  6. Step 6: Final answer
    x = 18,032,026.95

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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.