Home / 20,643,489.20-30,968,959.80-8,506,319.60

Finding the Fourth Proportional to 20,643,489.20, 30,968,959.80 and 8,506,319.60

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Solution

The fourth proportional to 20,643,489.20, 30,968,959.80 and 8,506,319.60 is: 12,761,014.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643,489.20 : 30,968,959.80 = 8,506,319.60 : x
  2. Step 2: Convert to fraction form
    20,643,489.20/30,968,959.80 = 8,506,319.60/x
  3. Step 3: Cross multiply
    20,643,489.20x = 30,968,959.80 × 8,506,319.60
  4. Step 4: Simplify right side
    20,643,489.20x = 263,431,869,738,352.06
  5. Step 5: Solve for x
    x = 263,431,869,738,352.06/20,643,489.20
  6. Step 6: Final answer
    x = 12,761,014.73

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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.