Home / 12,126,175.85-18,192,130.95-3,928,804.81

Finding the Fourth Proportional to 12,126,175.85, 18,192,130.95 and 3,928,804.81

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Solution

The fourth proportional to 12,126,175.85, 18,192,130.95 and 3,928,804.81 is: 5,894,136.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126,175.85 : 18,192,130.95 = 3,928,804.81 : x
  2. Step 2: Convert to fraction form
    12,126,175.85/18,192,130.95 = 3,928,804.81/x
  3. Step 3: Cross multiply
    12,126,175.85x = 18,192,130.95 × 3,928,804.81
  4. Step 4: Simplify right side
    12,126,175.85x = 71,473,331,560,865.84
  5. Step 5: Solve for x
    x = 71,473,331,560,865.84/12,126,175.85
  6. Step 6: Final answer
    x = 5,894,136.16

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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.