Home / 12,400.95-18,594.42-4,078.72

Finding the Fourth Proportional to 12,400.95, 18,594.42 and 4,078.72

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Solution

The fourth proportional to 12,400.95, 18,594.42 and 4,078.72 is: 6,115.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.95 : 18,594.42 = 4,078.72 : x
  2. Step 2: Convert to fraction form
    12,400.95/18,594.42 = 4,078.72/x
  3. Step 3: Cross multiply
    12,400.95x = 18,594.42 × 4,078.72
  4. Step 4: Simplify right side
    12,400.95x = 75,841,339.77
  5. Step 5: Solve for x
    x = 75,841,339.77/12,400.95
  6. Step 6: Final answer
    x = 6,115.77

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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.