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Finding the Fourth Proportional to 13,646.48, 20,328.87 and 13,233.48

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Solution

The fourth proportional to 13,646.48, 20,328.87 and 13,233.48 is: 19,713.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,646.48 : 20,328.87 = 13,233.48 : x
  2. Step 2: Convert to fraction form
    13,646.48/20,328.87 = 13,233.48/x
  3. Step 3: Cross multiply
    13,646.48x = 20,328.87 × 13,233.48
  4. Step 4: Simplify right side
    13,646.48x = 269,021,667.96
  5. Step 5: Solve for x
    x = 269,021,667.96/13,646.48
  6. Step 6: Final answer
    x = 19,713.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.