Home / 12,159.84-18,239.16-3,394.56

Finding the Fourth Proportional to 12,159.84, 18,239.16 and 3,394.56

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Solution

The fourth proportional to 12,159.84, 18,239.16 and 3,394.56 is: 5,091.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.84 : 18,239.16 = 3,394.56 : x
  2. Step 2: Convert to fraction form
    12,159.84/18,239.16 = 3,394.56/x
  3. Step 3: Cross multiply
    12,159.84x = 18,239.16 × 3,394.56
  4. Step 4: Simplify right side
    12,159.84x = 61,913,922.97
  5. Step 5: Solve for x
    x = 61,913,922.97/12,159.84
  6. Step 6: Final answer
    x = 5,091.67

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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.