Home / 21,190,405.60-31,785,608.40-19,755,514.90

Finding the Fourth Proportional to 21,190,405.60, 31,785,608.40 and 19,755,514.90

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Solution

The fourth proportional to 21,190,405.60, 31,785,608.40 and 19,755,514.90 is: 29,633,272.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190,405.60 : 31,785,608.40 = 19,755,514.90 : x
  2. Step 2: Convert to fraction form
    21,190,405.60/31,785,608.40 = 19,755,514.90/x
  3. Step 3: Cross multiply
    21,190,405.60x = 31,785,608.40 × 19,755,514.90
  4. Step 4: Simplify right side
    21,190,405.60x = 627,941,060,351,765.12
  5. Step 5: Solve for x
    x = 627,941,060,351,765.12/21,190,405.60
  6. Step 6: Final answer
    x = 29,633,272.35

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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.