Home / 18,919.32-26,081.39-13,236.47

Finding the Fourth Proportional to 18,919.32, 26,081.39 and 13,236.47

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Solution

The fourth proportional to 18,919.32, 26,081.39 and 13,236.47 is: 18,247.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.32 : 26,081.39 = 13,236.47 : x
  2. Step 2: Convert to fraction form
    18,919.32/26,081.39 = 13,236.47/x
  3. Step 3: Cross multiply
    18,919.32x = 26,081.39 × 13,236.47
  4. Step 4: Simplify right side
    18,919.32x = 345,225,438.98
  5. Step 5: Solve for x
    x = 345,225,438.98/18,919.32
  6. Step 6: Final answer
    x = 18,247.24

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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.