Home / 21,009,471.68-28,993,070.94-11,351,679.68

Finding the Fourth Proportional to 21,009,471.68, 28,993,070.94 and 11,351,679.68

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Solution

The fourth proportional to 21,009,471.68, 28,993,070.94 and 11,351,679.68 is: 15,665,317.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009,471.68 : 28,993,070.94 = 11,351,679.68 : x
  2. Step 2: Convert to fraction form
    21,009,471.68/28,993,070.94 = 11,351,679.68/x
  3. Step 3: Cross multiply
    21,009,471.68x = 28,993,070.94 × 11,351,679.68
  4. Step 4: Simplify right side
    21,009,471.68x = 329,120,054,250,396.50
  5. Step 5: Solve for x
    x = 329,120,054,250,396.50/21,009,471.68
  6. Step 6: Final answer
    x = 15,665,317.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.