Home / 20,658.13-30,986.92-5,075.89

Finding the Fourth Proportional to 20,658.13, 30,986.92 and 5,075.89

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Solution

The fourth proportional to 20,658.13, 30,986.92 and 5,075.89 is: 7,613.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.13 : 30,986.92 = 5,075.89 : x
  2. Step 2: Convert to fraction form
    20,658.13/30,986.92 = 5,075.89/x
  3. Step 3: Cross multiply
    20,658.13x = 30,986.92 × 5,075.89
  4. Step 4: Simplify right side
    20,658.13x = 157,286,197.36
  5. Step 5: Solve for x
    x = 157,286,197.36/20,658.13
  6. Step 6: Final answer
    x = 7,613.77

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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.