Home / 18,762,079.80-28,143,119.70-12,790,111.80

Finding the Fourth Proportional to 18,762,079.80, 28,143,119.70 and 12,790,111.80

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Solution

The fourth proportional to 18,762,079.80, 28,143,119.70 and 12,790,111.80 is: 19,185,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762,079.80 : 28,143,119.70 = 12,790,111.80 : x
  2. Step 2: Convert to fraction form
    18,762,079.80/28,143,119.70 = 12,790,111.80/x
  3. Step 3: Cross multiply
    18,762,079.80x = 28,143,119.70 × 12,790,111.80
  4. Step 4: Simplify right side
    18,762,079.80x = 359,953,647,363,782.50
  5. Step 5: Solve for x
    x = 359,953,647,363,782.50/18,762,079.80
  6. Step 6: Final answer
    x = 19,185,167.70

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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.