Home / 13,668.72-20,480.04-12,528.24

Finding the Fourth Proportional to 13,668.72, 20,480.04 and 12,528.24

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Solution

The fourth proportional to 13,668.72, 20,480.04 and 12,528.24 is: 18,771.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,668.72 : 20,480.04 = 12,528.24 : x
  2. Step 2: Convert to fraction form
    13,668.72/20,480.04 = 12,528.24/x
  3. Step 3: Cross multiply
    13,668.72x = 20,480.04 × 12,528.24
  4. Step 4: Simplify right side
    13,668.72x = 256,578,856.33
  5. Step 5: Solve for x
    x = 256,578,856.33/13,668.72
  6. Step 6: Final answer
    x = 18,771.24

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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.