Home / 21,235,144.73-31,697,692.47-18,221,874.26

Finding the Fourth Proportional to 21,235,144.73, 31,697,692.47 and 18,221,874.26

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Solution

The fourth proportional to 21,235,144.73, 31,697,692.47 and 18,221,874.26 is: 27,199,784.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235,144.73 : 31,697,692.47 = 18,221,874.26 : x
  2. Step 2: Convert to fraction form
    21,235,144.73/31,697,692.47 = 18,221,874.26/x
  3. Step 3: Cross multiply
    21,235,144.73x = 31,697,692.47 × 18,221,874.26
  4. Step 4: Simplify right side
    21,235,144.73x = 577,591,366,362,000.25
  5. Step 5: Solve for x
    x = 577,591,366,362,000.25/21,235,144.73
  6. Step 6: Final answer
    x = 27,199,784.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.