Home / 13,734.84-18,954.20-7,447.28

Finding the Fourth Proportional to 13,734.84, 18,954.20 and 7,447.28

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Solution

The fourth proportional to 13,734.84, 18,954.20 and 7,447.28 is: 10,277.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,734.84 : 18,954.20 = 7,447.28 : x
  2. Step 2: Convert to fraction form
    13,734.84/18,954.20 = 7,447.28/x
  3. Step 3: Cross multiply
    13,734.84x = 18,954.20 × 7,447.28
  4. Step 4: Simplify right side
    13,734.84x = 141,157,234.58
  5. Step 5: Solve for x
    x = 141,157,234.58/13,734.84
  6. Step 6: Final answer
    x = 10,277.31

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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.