Home / 12,139,390.40-18,206,752.80-3,620,004.80

Finding the Fourth Proportional to 12,139,390.40, 18,206,752.80 and 3,620,004.80

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Solution

The fourth proportional to 12,139,390.40, 18,206,752.80 and 3,620,004.80 is: 5,429,311.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,139,390.40 : 18,206,752.80 = 3,620,004.80 : x
  2. Step 2: Convert to fraction form
    12,139,390.40/18,206,752.80 = 3,620,004.80/x
  3. Step 3: Cross multiply
    12,139,390.40x = 18,206,752.80 × 3,620,004.80
  4. Step 4: Simplify right side
    12,139,390.40x = 65,908,532,528,413.44
  5. Step 5: Solve for x
    x = 65,908,532,528,413.44/12,139,390.40
  6. Step 6: Final answer
    x = 5,429,311.55

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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.