Home / 20,762.22-31,145.04-8,757.84

Finding the Fourth Proportional to 20,762.22, 31,145.04 and 8,757.84

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Solution

The fourth proportional to 20,762.22, 31,145.04 and 8,757.84 is: 13,137.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.22 : 31,145.04 = 8,757.84 : x
  2. Step 2: Convert to fraction form
    20,762.22/31,145.04 = 8,757.84/x
  3. Step 3: Cross multiply
    20,762.22x = 31,145.04 × 8,757.84
  4. Step 4: Simplify right side
    20,762.22x = 272,763,277.11
  5. Step 5: Solve for x
    x = 272,763,277.11/20,762.22
  6. Step 6: Final answer
    x = 13,137.48

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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.