Home / 12,289.84-18,429.36-3,522.76

Finding the Fourth Proportional to 12,289.84, 18,429.36 and 3,522.76

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Solution

The fourth proportional to 12,289.84, 18,429.36 and 3,522.76 is: 5,282.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.84 : 18,429.36 = 3,522.76 : x
  2. Step 2: Convert to fraction form
    12,289.84/18,429.36 = 3,522.76/x
  3. Step 3: Cross multiply
    12,289.84x = 18,429.36 × 3,522.76
  4. Step 4: Simplify right side
    12,289.84x = 64,922,212.23
  5. Step 5: Solve for x
    x = 64,922,212.23/12,289.84
  6. Step 6: Final answer
    x = 5,282.59

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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.