Home / 18,766.75-25,886.83-12,393.40

Finding the Fourth Proportional to 18,766.75, 25,886.83 and 12,393.40

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Solution

The fourth proportional to 18,766.75, 25,886.83 and 12,393.40 is: 17,095.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,766.75 : 25,886.83 = 12,393.40 : x
  2. Step 2: Convert to fraction form
    18,766.75/25,886.83 = 12,393.40/x
  3. Step 3: Cross multiply
    18,766.75x = 25,886.83 × 12,393.40
  4. Step 4: Simplify right side
    18,766.75x = 320,825,647.52
  5. Step 5: Solve for x
    x = 320,825,647.52/18,766.75
  6. Step 6: Final answer
    x = 17,095.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.