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Finding the Fourth Proportional to 13,668.48, 20,476.08 and 8,655.48

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Solution

The fourth proportional to 13,668.48, 20,476.08 and 8,655.48 is: 12,966.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,668.48 : 20,476.08 = 8,655.48 : x
  2. Step 2: Convert to fraction form
    13,668.48/20,476.08 = 8,655.48/x
  3. Step 3: Cross multiply
    13,668.48x = 20,476.08 × 8,655.48
  4. Step 4: Simplify right side
    13,668.48x = 177,230,300.92
  5. Step 5: Solve for x
    x = 177,230,300.92/13,668.48
  6. Step 6: Final answer
    x = 12,966.35

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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.