Home / 18,909,881.20-28,360,885.20-8,127,533.80

Finding the Fourth Proportional to 18,909,881.20, 28,360,885.20 and 8,127,533.80

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Solution

The fourth proportional to 18,909,881.20, 28,360,885.20 and 8,127,533.80 is: 12,189,608.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909,881.20 : 28,360,885.20 = 8,127,533.80 : x
  2. Step 2: Convert to fraction form
    18,909,881.20/28,360,885.20 = 8,127,533.80/x
  3. Step 3: Cross multiply
    18,909,881.20x = 28,360,885.20 × 8,127,533.80
  4. Step 4: Simplify right side
    18,909,881.20x = 230,504,053,060,919.75
  5. Step 5: Solve for x
    x = 230,504,053,060,919.75/18,909,881.20
  6. Step 6: Final answer
    x = 12,189,608.74

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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.