Home / 20,334,742.20-28,051,567.75-12,984,847.56

Finding the Fourth Proportional to 20,334,742.20, 28,051,567.75 and 12,984,847.56

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Solution

The fourth proportional to 20,334,742.20, 28,051,567.75 and 12,984,847.56 is: 17,912,463.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334,742.20 : 28,051,567.75 = 12,984,847.56 : x
  2. Step 2: Convert to fraction form
    20,334,742.20/28,051,567.75 = 12,984,847.56/x
  3. Step 3: Cross multiply
    20,334,742.20x = 28,051,567.75 × 12,984,847.56
  4. Step 4: Simplify right side
    20,334,742.20x = 364,245,331,068,993.25
  5. Step 5: Solve for x
    x = 364,245,331,068,993.25/20,334,742.20
  6. Step 6: Final answer
    x = 17,912,463.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.