Home / 13,690,077.52-18,893,356.20-7,809,841.12

Finding the Fourth Proportional to 13,690,077.52, 18,893,356.20 and 7,809,841.12

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Solution

The fourth proportional to 13,690,077.52, 18,893,356.20 and 7,809,841.12 is: 10,778,179.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690,077.52 : 18,893,356.20 = 7,809,841.12 : x
  2. Step 2: Convert to fraction form
    13,690,077.52/18,893,356.20 = 7,809,841.12/x
  3. Step 3: Cross multiply
    13,690,077.52x = 18,893,356.20 × 7,809,841.12
  4. Step 4: Simplify right side
    13,690,077.52x = 147,554,110,145,566.94
  5. Step 5: Solve for x
    x = 147,554,110,145,566.94/13,690,077.52
  6. Step 6: Final answer
    x = 10,778,179.30

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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.