Home / 20,681,343.20-31,022,014.80-18,889,752.80

Finding the Fourth Proportional to 20,681,343.20, 31,022,014.80 and 18,889,752.80

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Solution

The fourth proportional to 20,681,343.20, 31,022,014.80 and 18,889,752.80 is: 28,334,629.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681,343.20 : 31,022,014.80 = 18,889,752.80 : x
  2. Step 2: Convert to fraction form
    20,681,343.20/31,022,014.80 = 18,889,752.80/x
  3. Step 3: Cross multiply
    20,681,343.20x = 31,022,014.80 × 18,889,752.80
  4. Step 4: Simplify right side
    20,681,343.20x = 585,998,190,929,941.50
  5. Step 5: Solve for x
    x = 585,998,190,929,941.50/20,681,343.20
  6. Step 6: Final answer
    x = 28,334,629.20

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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.