Home / 20,415,046.40-30,622,569.60-13,187,448.80

Finding the Fourth Proportional to 20,415,046.40, 30,622,569.60 and 13,187,448.80

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Solution

The fourth proportional to 20,415,046.40, 30,622,569.60 and 13,187,448.80 is: 19,781,173.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415,046.40 : 30,622,569.60 = 13,187,448.80 : x
  2. Step 2: Convert to fraction form
    20,415,046.40/30,622,569.60 = 13,187,448.80/x
  3. Step 3: Cross multiply
    20,415,046.40x = 30,622,569.60 × 13,187,448.80
  4. Step 4: Simplify right side
    20,415,046.40x = 403,833,568,724,436.50
  5. Step 5: Solve for x
    x = 403,833,568,724,436.50/20,415,046.40
  6. Step 6: Final answer
    x = 19,781,173.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.