Home / 18,717,961.87-28,076,568.96-8,480,913.76

Finding the Fourth Proportional to 18,717,961.87, 28,076,568.96 and 8,480,913.76

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Solution

The fourth proportional to 18,717,961.87, 28,076,568.96 and 8,480,913.76 is: 12,721,201.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717,961.87 : 28,076,568.96 = 8,480,913.76 : x
  2. Step 2: Convert to fraction form
    18,717,961.87/28,076,568.96 = 8,480,913.76/x
  3. Step 3: Cross multiply
    18,717,961.87x = 28,076,568.96 × 8,480,913.76
  4. Step 4: Simplify right side
    18,717,961.87x = 238,114,960,026,452.91
  5. Step 5: Solve for x
    x = 238,114,960,026,452.91/18,717,961.87
  6. Step 6: Final answer
    x = 12,721,201.25

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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.