Home / 12,128,219.80-18,192,329.70-11,136,196.60

Finding the Fourth Proportional to 12,128,219.80, 18,192,329.70 and 11,136,196.60

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Solution

The fourth proportional to 12,128,219.80, 18,192,329.70 and 11,136,196.60 is: 16,704,294.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,219.80 : 18,192,329.70 = 11,136,196.60 : x
  2. Step 2: Convert to fraction form
    12,128,219.80/18,192,329.70 = 11,136,196.60/x
  3. Step 3: Cross multiply
    12,128,219.80x = 18,192,329.70 × 11,136,196.60
  4. Step 4: Simplify right side
    12,128,219.80x = 202,593,360,151,219
  5. Step 5: Solve for x
    x = 202,593,360,151,219/12,128,219.80
  6. Step 6: Final answer
    x = 16,704,294.90

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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.