Home / 20,395,021.87-28,144,268.13-11,102,398.51

Finding the Fourth Proportional to 20,395,021.87, 28,144,268.13 and 11,102,398.51

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Solution

The fourth proportional to 20,395,021.87, 28,144,268.13 and 11,102,398.51 is: 15,320,840.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,395,021.87 : 28,144,268.13 = 11,102,398.51 : x
  2. Step 2: Convert to fraction form
    20,395,021.87/28,144,268.13 = 11,102,398.51/x
  3. Step 3: Cross multiply
    20,395,021.87x = 28,144,268.13 × 11,102,398.51
  4. Step 4: Simplify right side
    20,395,021.87x = 312,468,880,551,552.44
  5. Step 5: Solve for x
    x = 312,468,880,551,552.44/20,395,021.87
  6. Step 6: Final answer
    x = 15,320,840.67

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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.