Home / 12,476,078.80-18,700,121.40-5,286,389.20

Finding the Fourth Proportional to 12,476,078.80, 18,700,121.40 and 5,286,389.20

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Solution

The fourth proportional to 12,476,078.80, 18,700,121.40 and 5,286,389.20 is: 7,923,653.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,476,078.80 : 18,700,121.40 = 5,286,389.20 : x
  2. Step 2: Convert to fraction form
    12,476,078.80/18,700,121.40 = 5,286,389.20/x
  3. Step 3: Cross multiply
    12,476,078.80x = 18,700,121.40 × 5,286,389.20
  4. Step 4: Simplify right side
    12,476,078.80x = 98,856,119,807,648.88
  5. Step 5: Solve for x
    x = 98,856,119,807,648.88/12,476,078.80
  6. Step 6: Final answer
    x = 7,923,653.05

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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.