Home / 20,520,079.20-30,764,566.80-10,429,941.60

Finding the Fourth Proportional to 20,520,079.20, 30,764,566.80 and 10,429,941.60

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Solution

The fourth proportional to 20,520,079.20, 30,764,566.80 and 10,429,941.60 is: 15,637,007.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520,079.20 : 30,764,566.80 = 10,429,941.60 : x
  2. Step 2: Convert to fraction form
    20,520,079.20/30,764,566.80 = 10,429,941.60/x
  3. Step 3: Cross multiply
    20,520,079.20x = 30,764,566.80 × 10,429,941.60
  4. Step 4: Simplify right side
    20,520,079.20x = 320,872,635,073,298.88
  5. Step 5: Solve for x
    x = 320,872,635,073,298.88/20,520,079.20
  6. Step 6: Final answer
    x = 15,637,007.63

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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.