Home / 13,640,436.72-18,820,992.67-7,838,097.45

Finding the Fourth Proportional to 13,640,436.72, 18,820,992.67 and 7,838,097.45

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Solution

The fourth proportional to 13,640,436.72, 18,820,992.67 and 7,838,097.45 is: 10,814,959.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640,436.72 : 18,820,992.67 = 7,838,097.45 : x
  2. Step 2: Convert to fraction form
    13,640,436.72/18,820,992.67 = 7,838,097.45/x
  3. Step 3: Cross multiply
    13,640,436.72x = 18,820,992.67 × 7,838,097.45
  4. Step 4: Simplify right side
    13,640,436.72x = 147,520,774,519,900.25
  5. Step 5: Solve for x
    x = 147,520,774,519,900.25/13,640,436.72
  6. Step 6: Final answer
    x = 10,814,959.78

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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.