Home / 13,609,986.50-18,781,725.48-7,415,015.78

Finding the Fourth Proportional to 13,609,986.50, 18,781,725.48 and 7,415,015.78

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Solution

The fourth proportional to 13,609,986.50, 18,781,725.48 and 7,415,015.78 is: 10,232,691.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609,986.50 : 18,781,725.48 = 7,415,015.78 : x
  2. Step 2: Convert to fraction form
    13,609,986.50/18,781,725.48 = 7,415,015.78/x
  3. Step 3: Cross multiply
    13,609,986.50x = 18,781,725.48 × 7,415,015.78
  4. Step 4: Simplify right side
    13,609,986.50x = 139,266,790,809,828.08
  5. Step 5: Solve for x
    x = 139,266,790,809,828.08/13,609,986.50
  6. Step 6: Final answer
    x = 10,232,691.33

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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.