Home / 18,921.36-25,922.40-18,211.95

Finding the Fourth Proportional to 18,921.36, 25,922.40 and 18,211.95

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Solution

The fourth proportional to 18,921.36, 25,922.40 and 18,211.95 is: 24,950.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.36 : 25,922.40 = 18,211.95 : x
  2. Step 2: Convert to fraction form
    18,921.36/25,922.40 = 18,211.95/x
  3. Step 3: Cross multiply
    18,921.36x = 25,922.40 × 18,211.95
  4. Step 4: Simplify right side
    18,921.36x = 472,097,452.68
  5. Step 5: Solve for x
    x = 472,097,452.68/18,921.36
  6. Step 6: Final answer
    x = 24,950.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.