Home / 20,925.00-31,389.56-6,879.33

Finding the Fourth Proportional to 20,925.00, 31,389.56 and 6,879.33

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Solution

The fourth proportional to 20,925.00, 31,389.56 and 6,879.33 is: 10,319.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.00 : 31,389.56 = 6,879.33 : x
  2. Step 2: Convert to fraction form
    20,925.00/31,389.56 = 6,879.33/x
  3. Step 3: Cross multiply
    20,925.00x = 31,389.56 × 6,879.33
  4. Step 4: Simplify right side
    20,925.00x = 215,938,984.85
  5. Step 5: Solve for x
    x = 215,938,984.85/20,925.00
  6. Step 6: Final answer
    x = 10,319.67

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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.