Home / 20,657,456.80-30,986,185.20-18,425,404.60

Finding the Fourth Proportional to 20,657,456.80, 30,986,185.20 and 18,425,404.60

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Solution

The fourth proportional to 20,657,456.80, 30,986,185.20 and 18,425,404.60 is: 27,638,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657,456.80 : 30,986,185.20 = 18,425,404.60 : x
  2. Step 2: Convert to fraction form
    20,657,456.80/30,986,185.20 = 18,425,404.60/x
  3. Step 3: Cross multiply
    20,657,456.80x = 30,986,185.20 × 18,425,404.60
  4. Step 4: Simplify right side
    20,657,456.80x = 570,932,999,320,532
  5. Step 5: Solve for x
    x = 570,932,999,320,532/20,657,456.80
  6. Step 6: Final answer
    x = 27,638,106.90

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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.