Home / 18,723,295.20-28,084,942.80-15,699,986.40

Finding the Fourth Proportional to 18,723,295.20, 28,084,942.80 and 15,699,986.40

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Solution

The fourth proportional to 18,723,295.20, 28,084,942.80 and 15,699,986.40 is: 23,549,979.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723,295.20 : 28,084,942.80 = 15,699,986.40 : x
  2. Step 2: Convert to fraction form
    18,723,295.20/28,084,942.80 = 15,699,986.40/x
  3. Step 3: Cross multiply
    18,723,295.20x = 28,084,942.80 × 15,699,986.40
  4. Step 4: Simplify right side
    18,723,295.20x = 440,933,220,004,777.94
  5. Step 5: Solve for x
    x = 440,933,220,004,777.94/18,723,295.20
  6. Step 6: Final answer
    x = 23,549,979.60

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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.