Home / 20,981.35-31,464.69-6,186.34

Finding the Fourth Proportional to 20,981.35, 31,464.69 and 6,186.34

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Solution

The fourth proportional to 20,981.35, 31,464.69 and 6,186.34 is: 9,277.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.35 : 31,464.69 = 6,186.34 : x
  2. Step 2: Convert to fraction form
    20,981.35/31,464.69 = 6,186.34/x
  3. Step 3: Cross multiply
    20,981.35x = 31,464.69 × 6,186.34
  4. Step 4: Simplify right side
    20,981.35x = 194,651,270.33
  5. Step 5: Solve for x
    x = 194,651,270.33/20,981.35
  6. Step 6: Final answer
    x = 9,277.35

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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.