Home / 18,311.40-25,268.36-12,351.15

Finding the Fourth Proportional to 18,311.40, 25,268.36 and 12,351.15

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Solution

The fourth proportional to 18,311.40, 25,268.36 and 12,351.15 is: 17,043.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.40 : 25,268.36 = 12,351.15 : x
  2. Step 2: Convert to fraction form
    18,311.40/25,268.36 = 12,351.15/x
  3. Step 3: Cross multiply
    18,311.40x = 25,268.36 × 12,351.15
  4. Step 4: Simplify right side
    18,311.40x = 312,093,242.86
  5. Step 5: Solve for x
    x = 312,093,242.86/18,311.40
  6. Step 6: Final answer
    x = 17,043.66

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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.