Home / 12,399,109.20-18,565,486.20-7,886,955.60

Finding the Fourth Proportional to 12,399,109.20, 18,565,486.20 and 7,886,955.60

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Solution

The fourth proportional to 12,399,109.20, 18,565,486.20 and 7,886,955.60 is: 11,809,329.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399,109.20 : 18,565,486.20 = 7,886,955.60 : x
  2. Step 2: Convert to fraction form
    12,399,109.20/18,565,486.20 = 7,886,955.60/x
  3. Step 3: Cross multiply
    12,399,109.20x = 18,565,486.20 × 7,886,955.60
  4. Step 4: Simplify right side
    12,399,109.20x = 146,425,165,351,812.72
  5. Step 5: Solve for x
    x = 146,425,165,351,812.72/12,399,109.20
  6. Step 6: Final answer
    x = 11,809,329.44

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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.