Home / 13,734.28-18,948.84-7,765.36

Finding the Fourth Proportional to 13,734.28, 18,948.84 and 7,765.36

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Solution

The fourth proportional to 13,734.28, 18,948.84 and 7,765.36 is: 10,713.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,734.28 : 18,948.84 = 7,765.36 : x
  2. Step 2: Convert to fraction form
    13,734.28/18,948.84 = 7,765.36/x
  3. Step 3: Cross multiply
    13,734.28x = 18,948.84 × 7,765.36
  4. Step 4: Simplify right side
    13,734.28x = 147,144,564.18
  5. Step 5: Solve for x
    x = 147,144,564.18/13,734.28
  6. Step 6: Final answer
    x = 10,713.67

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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.