Home / 12,378,771.35-18,568,157.03-7,834,950.80

Finding the Fourth Proportional to 12,378,771.35, 18,568,157.03 and 7,834,950.80

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Solution

The fourth proportional to 12,378,771.35, 18,568,157.03 and 7,834,950.80 is: 11,752,426.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378,771.35 : 18,568,157.03 = 7,834,950.80 : x
  2. Step 2: Convert to fraction form
    12,378,771.35/18,568,157.03 = 7,834,950.80/x
  3. Step 3: Cross multiply
    12,378,771.35x = 18,568,157.03 × 7,834,950.80
  4. Step 4: Simplify right side
    12,378,771.35x = 145,480,596,737,549.34
  5. Step 5: Solve for x
    x = 145,480,596,737,549.34/12,378,771.35
  6. Step 6: Final answer
    x = 11,752,426.20

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1.5x scale

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.