Home / 12,938,136.80-19,423,179.60-8,145,816.80

Finding the Fourth Proportional to 12,938,136.80, 19,423,179.60 and 8,145,816.80

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Solution

The fourth proportional to 12,938,136.80, 19,423,179.60 and 8,145,816.80 is: 12,228,782.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938,136.80 : 19,423,179.60 = 8,145,816.80 : x
  2. Step 2: Convert to fraction form
    12,938,136.80/19,423,179.60 = 8,145,816.80/x
  3. Step 3: Cross multiply
    12,938,136.80x = 19,423,179.60 × 8,145,816.80
  4. Step 4: Simplify right side
    12,938,136.80x = 158,217,662,695,097.28
  5. Step 5: Solve for x
    x = 158,217,662,695,097.28/12,938,136.80
  6. Step 6: Final answer
    x = 12,228,782.64

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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.