Home / 13,640,451.76-18,821,013.42-7,838,112.46

Finding the Fourth Proportional to 13,640,451.76, 18,821,013.42 and 7,838,112.46

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Solution

The fourth proportional to 13,640,451.76, 18,821,013.42 and 7,838,112.46 is: 10,814,980.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640,451.76 : 18,821,013.42 = 7,838,112.46 : x
  2. Step 2: Convert to fraction form
    13,640,451.76/18,821,013.42 = 7,838,112.46/x
  3. Step 3: Cross multiply
    13,640,451.76x = 18,821,013.42 × 7,838,112.46
  4. Step 4: Simplify right side
    13,640,451.76x = 147,521,219,797,129.22
  5. Step 5: Solve for x
    x = 147,521,219,797,129.22/13,640,451.76
  6. Step 6: Final answer
    x = 10,814,980.50

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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.