Home / 13,930.48-20,873.80-8,370.64

Finding the Fourth Proportional to 13,930.48, 20,873.80 and 8,370.64

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Solution

The fourth proportional to 13,930.48, 20,873.80 and 8,370.64 is: 12,542.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.48 : 20,873.80 = 8,370.64 : x
  2. Step 2: Convert to fraction form
    13,930.48/20,873.80 = 8,370.64/x
  3. Step 3: Cross multiply
    13,930.48x = 20,873.80 × 8,370.64
  4. Step 4: Simplify right side
    13,930.48x = 174,727,065.23
  5. Step 5: Solve for x
    x = 174,727,065.23/13,930.48
  6. Step 6: Final answer
    x = 12,542.79

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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.