Home / 12,487,328.20-18,744,989.10-9,659,974.60

Finding the Fourth Proportional to 12,487,328.20, 18,744,989.10 and 9,659,974.60

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Solution

The fourth proportional to 12,487,328.20, 18,744,989.10 and 9,659,974.60 is: 14,500,789.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487,328.20 : 18,744,989.10 = 9,659,974.60 : x
  2. Step 2: Convert to fraction form
    12,487,328.20/18,744,989.10 = 9,659,974.60/x
  3. Step 3: Cross multiply
    12,487,328.20x = 18,744,989.10 × 9,659,974.60
  4. Step 4: Simplify right side
    12,487,328.20x = 181,076,118,583,276.88
  5. Step 5: Solve for x
    x = 181,076,118,583,276.88/12,487,328.20
  6. Step 6: Final answer
    x = 14,500,789.58

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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.