Home / 12,128,541.80-18,192,812.70-11,136,518.60

Finding the Fourth Proportional to 12,128,541.80, 18,192,812.70 and 11,136,518.60

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Solution

The fourth proportional to 12,128,541.80, 18,192,812.70 and 11,136,518.60 is: 16,704,777.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,541.80 : 18,192,812.70 = 11,136,518.60 : x
  2. Step 2: Convert to fraction form
    12,128,541.80/18,192,812.70 = 11,136,518.60/x
  3. Step 3: Cross multiply
    12,128,541.80x = 18,192,812.70 × 11,136,518.60
  4. Step 4: Simplify right side
    12,128,541.80x = 202,604,597,019,866.22
  5. Step 5: Solve for x
    x = 202,604,597,019,866.22/12,128,541.80
  6. Step 6: Final answer
    x = 16,704,777.90

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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.