Home / 18,887,907.87-28,328,692.38-5,242,440.51

Finding the Fourth Proportional to 18,887,907.87, 28,328,692.38 and 5,242,440.51

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Solution

The fourth proportional to 18,887,907.87, 28,328,692.38 and 5,242,440.51 is: 7,862,781.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887,907.87 : 28,328,692.38 = 5,242,440.51 : x
  2. Step 2: Convert to fraction form
    18,887,907.87/28,328,692.38 = 5,242,440.51/x
  3. Step 3: Cross multiply
    18,887,907.87x = 28,328,692.38 × 5,242,440.51
  4. Step 4: Simplify right side
    18,887,907.87x = 148,511,484,528,240.31
  5. Step 5: Solve for x
    x = 148,511,484,528,240.31/18,887,907.87
  6. Step 6: Final answer
    x = 7,862,781.07

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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.