Home / 20,881.48-31,329.08-7,734.84

Finding the Fourth Proportional to 20,881.48, 31,329.08 and 7,734.84

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Solution

The fourth proportional to 20,881.48, 31,329.08 and 7,734.84 is: 11,604.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.48 : 31,329.08 = 7,734.84 : x
  2. Step 2: Convert to fraction form
    20,881.48/31,329.08 = 7,734.84/x
  3. Step 3: Cross multiply
    20,881.48x = 31,329.08 × 7,734.84
  4. Step 4: Simplify right side
    20,881.48x = 242,325,421.15
  5. Step 5: Solve for x
    x = 242,325,421.15/20,881.48
  6. Step 6: Final answer
    x = 11,604.80

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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.