Home / 21,289.22-31,934.03-7,438.26

Finding the Fourth Proportional to 21,289.22, 31,934.03 and 7,438.26

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Solution

The fourth proportional to 21,289.22, 31,934.03 and 7,438.26 is: 11,157.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.22 : 31,934.03 = 7,438.26 : x
  2. Step 2: Convert to fraction form
    21,289.22/31,934.03 = 7,438.26/x
  3. Step 3: Cross multiply
    21,289.22x = 31,934.03 × 7,438.26
  4. Step 4: Simplify right side
    21,289.22x = 237,533,617.99
  5. Step 5: Solve for x
    x = 237,533,617.99/21,289.22
  6. Step 6: Final answer
    x = 11,157.46

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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.