Home / 12,938,216.40-19,421,321.40-8,151,310.80

Finding the Fourth Proportional to 12,938,216.40, 19,421,321.40 and 8,151,310.80

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Solution

The fourth proportional to 12,938,216.40, 19,421,321.40 and 8,151,310.80 is: 12,235,784.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938,216.40 : 19,421,321.40 = 8,151,310.80 : x
  2. Step 2: Convert to fraction form
    12,938,216.40/19,421,321.40 = 8,151,310.80/x
  3. Step 3: Cross multiply
    12,938,216.40x = 19,421,321.40 × 8,151,310.80
  4. Step 4: Simplify right side
    12,938,216.40x = 158,309,226,878,091.09
  5. Step 5: Solve for x
    x = 158,309,226,878,091.09/12,938,216.40
  6. Step 6: Final answer
    x = 12,235,784.44

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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.