Home / 20,904.08-31,347-6,112.67

Finding the Fourth Proportional to 20,904.08, 31,347 and 6,112.67

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Solution

The fourth proportional to 20,904.08, 31,347 and 6,112.67 is: 9,166.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.08 : 31,347 = 6,112.67 : x
  2. Step 2: Convert to fraction form
    20,904.08/31,347 = 6,112.67/x
  3. Step 3: Cross multiply
    20,904.08x = 31,347 × 6,112.67
  4. Step 4: Simplify right side
    20,904.08x = 191,613,709.76
  5. Step 5: Solve for x
    x = 191,613,709.76/20,904.08
  6. Step 6: Final answer
    x = 9,166.33

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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.