Home / 13,660.72-20,486.16-9,281.92

Finding the Fourth Proportional to 13,660.72, 20,486.16 and 9,281.92

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Solution

The fourth proportional to 13,660.72, 20,486.16 and 9,281.92 is: 13,919.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.72 : 20,486.16 = 9,281.92 : x
  2. Step 2: Convert to fraction form
    13,660.72/20,486.16 = 9,281.92/x
  3. Step 3: Cross multiply
    13,660.72x = 20,486.16 × 9,281.92
  4. Step 4: Simplify right side
    13,660.72x = 190,150,898.23
  5. Step 5: Solve for x
    x = 190,150,898.23/13,660.72
  6. Step 6: Final answer
    x = 13,919.54

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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.