Home / 18,915,873.53-28,270,167.66-13,809,057.22

Finding the Fourth Proportional to 18,915,873.53, 28,270,167.66 and 13,809,057.22

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Solution

The fourth proportional to 18,915,873.53, 28,270,167.66 and 13,809,057.22 is: 20,637,924.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915,873.53 : 28,270,167.66 = 13,809,057.22 : x
  2. Step 2: Convert to fraction form
    18,915,873.53/28,270,167.66 = 13,809,057.22/x
  3. Step 3: Cross multiply
    18,915,873.53x = 28,270,167.66 × 13,809,057.22
  4. Step 4: Simplify right side
    18,915,873.53x = 390,384,362,625,537.38
  5. Step 5: Solve for x
    x = 390,384,362,625,537.38/18,915,873.53
  6. Step 6: Final answer
    x = 20,637,924.12

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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.