Home / 15,355.27-23,078.35-12,739.75

Finding the Fourth Proportional to 15,355.27, 23,078.35 and 12,739.75

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Solution

The fourth proportional to 15,355.27, 23,078.35 and 12,739.75 is: 19,147.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,355.27 : 23,078.35 = 12,739.75 : x
  2. Step 2: Convert to fraction form
    15,355.27/23,078.35 = 12,739.75/x
  3. Step 3: Cross multiply
    15,355.27x = 23,078.35 × 12,739.75
  4. Step 4: Simplify right side
    15,355.27x = 294,012,367.64
  5. Step 5: Solve for x
    x = 294,012,367.64/15,355.27
  6. Step 6: Final answer
    x = 19,147.32

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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.