Home / 18,717,942.60-28,076,913.90-8,640,246.60

Finding the Fourth Proportional to 18,717,942.60, 28,076,913.90 and 8,640,246.60

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Solution

The fourth proportional to 18,717,942.60, 28,076,913.90 and 8,640,246.60 is: 12,960,369.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717,942.60 : 28,076,913.90 = 8,640,246.60 : x
  2. Step 2: Convert to fraction form
    18,717,942.60/28,076,913.90 = 8,640,246.60/x
  3. Step 3: Cross multiply
    18,717,942.60x = 28,076,913.90 × 8,640,246.60
  4. Step 4: Simplify right side
    18,717,942.60x = 242,591,459,862,967.72
  5. Step 5: Solve for x
    x = 242,591,459,862,967.72/18,717,942.60
  6. Step 6: Final answer
    x = 12,960,369.90

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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.