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Finding the Fourth Proportional to 13,755.92, 20,661.48 and 13,368.33

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Solution

The fourth proportional to 13,755.92, 20,661.48 and 13,368.33 is: 20,079.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.92 : 20,661.48 = 13,368.33 : x
  2. Step 2: Convert to fraction form
    13,755.92/20,661.48 = 13,368.33/x
  3. Step 3: Cross multiply
    13,755.92x = 20,661.48 × 13,368.33
  4. Step 4: Simplify right side
    13,755.92x = 276,209,482.93
  5. Step 5: Solve for x
    x = 276,209,482.93/13,755.92
  6. Step 6: Final answer
    x = 20,079.32

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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.