Home / 13,638,947.40-18,824,978.34-7,841,097.41

Finding the Fourth Proportional to 13,638,947.40, 18,824,978.34 and 7,841,097.41

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Solution

The fourth proportional to 13,638,947.40, 18,824,978.34 and 7,841,097.41 is: 10,822,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638,947.40 : 18,824,978.34 = 7,841,097.41 : x
  2. Step 2: Convert to fraction form
    13,638,947.40/18,824,978.34 = 7,841,097.41/x
  3. Step 3: Cross multiply
    13,638,947.40x = 18,824,978.34 × 7,841,097.41
  4. Step 4: Simplify right side
    13,638,947.40x = 147,608,488,810,955.22
  5. Step 5: Solve for x
    x = 147,608,488,810,955.22/13,638,947.40
  6. Step 6: Final answer
    x = 10,822,571.90

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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.