Home / 18,915,874.03-28,270,168.40-13,809,057.72

Finding the Fourth Proportional to 18,915,874.03, 28,270,168.40 and 13,809,057.72

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Solution

The fourth proportional to 18,915,874.03, 28,270,168.40 and 13,809,057.72 is: 20,637,924.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915,874.03 : 28,270,168.40 = 13,809,057.72 : x
  2. Step 2: Convert to fraction form
    18,915,874.03/28,270,168.40 = 13,809,057.72/x
  3. Step 3: Cross multiply
    18,915,874.03x = 28,270,168.40 × 13,809,057.72
  4. Step 4: Simplify right side
    18,915,874.03x = 390,384,387,189,720.06
  5. Step 5: Solve for x
    x = 390,384,387,189,720.06/18,915,874.03
  6. Step 6: Final answer
    x = 20,637,924.88

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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.