Home / 20,742.12-31,069.98-9,658.44

Finding the Fourth Proportional to 20,742.12, 31,069.98 and 9,658.44

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Solution

The fourth proportional to 20,742.12, 31,069.98 and 9,658.44 is: 14,467.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.12 : 31,069.98 = 9,658.44 : x
  2. Step 2: Convert to fraction form
    20,742.12/31,069.98 = 9,658.44/x
  3. Step 3: Cross multiply
    20,742.12x = 31,069.98 × 9,658.44
  4. Step 4: Simplify right side
    20,742.12x = 300,087,537.63
  5. Step 5: Solve for x
    x = 300,087,537.63/20,742.12
  6. Step 6: Final answer
    x = 14,467.54

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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.