Home / 20,749.88-31,107.54-7,599.80

Finding the Fourth Proportional to 20,749.88, 31,107.54 and 7,599.80

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Solution

The fourth proportional to 20,749.88, 31,107.54 and 7,599.80 is: 11,393.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.88 : 31,107.54 = 7,599.80 : x
  2. Step 2: Convert to fraction form
    20,749.88/31,107.54 = 7,599.80/x
  3. Step 3: Cross multiply
    20,749.88x = 31,107.54 × 7,599.80
  4. Step 4: Simplify right side
    20,749.88x = 236,411,082.49
  5. Step 5: Solve for x
    x = 236,411,082.49/20,749.88
  6. Step 6: Final answer
    x = 11,393.37

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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.