Home / 12,345,621.20-18,518,433.86-5,153,231.60

Finding the Fourth Proportional to 12,345,621.20, 18,518,433.86 and 5,153,231.60

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Solution

The fourth proportional to 12,345,621.20, 18,518,433.86 and 5,153,231.60 is: 7,729,848.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345,621.20 : 18,518,433.86 = 5,153,231.60 : x
  2. Step 2: Convert to fraction form
    12,345,621.20/18,518,433.86 = 5,153,231.60/x
  3. Step 3: Cross multiply
    12,345,621.20x = 18,518,433.86 × 5,153,231.60
  4. Step 4: Simplify right side
    12,345,621.20x = 95,429,778,549,861.97
  5. Step 5: Solve for x
    x = 95,429,778,549,861.97/12,345,621.20
  6. Step 6: Final answer
    x = 7,729,848.26

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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.