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Finding the Fourth Proportional to 13,703.28, 18,910.48 and 7,734.92

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Solution

The fourth proportional to 13,703.28, 18,910.48 and 7,734.92 is: 10,674.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703.28 : 18,910.48 = 7,734.92 : x
  2. Step 2: Convert to fraction form
    13,703.28/18,910.48 = 7,734.92/x
  3. Step 3: Cross multiply
    13,703.28x = 18,910.48 × 7,734.92
  4. Step 4: Simplify right side
    13,703.28x = 146,271,049.96
  5. Step 5: Solve for x
    x = 146,271,049.96/13,703.28
  6. Step 6: Final answer
    x = 10,674.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.