Home / 21,898.12-30,216.96-12,338.44

Finding the Fourth Proportional to 21,898.12, 30,216.96 and 12,338.44

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Solution

The fourth proportional to 21,898.12, 30,216.96 and 12,338.44 is: 17,025.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.12 : 30,216.96 = 12,338.44 : x
  2. Step 2: Convert to fraction form
    21,898.12/30,216.96 = 12,338.44/x
  3. Step 3: Cross multiply
    21,898.12x = 30,216.96 × 12,338.44
  4. Step 4: Simplify right side
    21,898.12x = 372,830,147.94
  5. Step 5: Solve for x
    x = 372,830,147.94/21,898.12
  6. Step 6: Final answer
    x = 17,025.67

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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.