Home / 21,268.36-31,901.26-9,418.67

Finding the Fourth Proportional to 21,268.36, 31,901.26 and 9,418.67

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Solution

The fourth proportional to 21,268.36, 31,901.26 and 9,418.67 is: 14,127.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.36 : 31,901.26 = 9,418.67 : x
  2. Step 2: Convert to fraction form
    21,268.36/31,901.26 = 9,418.67/x
  3. Step 3: Cross multiply
    21,268.36x = 31,901.26 × 9,418.67
  4. Step 4: Simplify right side
    21,268.36x = 300,467,440.52
  5. Step 5: Solve for x
    x = 300,467,440.52/21,268.36
  6. Step 6: Final answer
    x = 14,127.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.