Home / 19,137.08-28,700.40-12,106.54

Finding the Fourth Proportional to 19,137.08, 28,700.40 and 12,106.54

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Solution

The fourth proportional to 19,137.08, 28,700.40 and 12,106.54 is: 18,156.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,137.08 : 28,700.40 = 12,106.54 : x
  2. Step 2: Convert to fraction form
    19,137.08/28,700.40 = 12,106.54/x
  3. Step 3: Cross multiply
    19,137.08x = 28,700.40 × 12,106.54
  4. Step 4: Simplify right side
    19,137.08x = 347,462,540.62
  5. Step 5: Solve for x
    x = 347,462,540.62/19,137.08
  6. Step 6: Final answer
    x = 18,156.51

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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.