Home / 13,078,896.80-19,618,345.20-12,491,031.20

Finding the Fourth Proportional to 13,078,896.80, 19,618,345.20 and 12,491,031.20

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Solution

The fourth proportional to 13,078,896.80, 19,618,345.20 and 12,491,031.20 is: 18,736,546.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078,896.80 : 19,618,345.20 = 12,491,031.20 : x
  2. Step 2: Convert to fraction form
    13,078,896.80/19,618,345.20 = 12,491,031.20/x
  3. Step 3: Cross multiply
    13,078,896.80x = 19,618,345.20 × 12,491,031.20
  4. Step 4: Simplify right side
    13,078,896.80x = 245,053,361,985,570.22
  5. Step 5: Solve for x
    x = 245,053,361,985,570.22/13,078,896.80
  6. Step 6: Final answer
    x = 18,736,546.80

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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.