Home / 12,153.21-18,222.52-4,748.84

Finding the Fourth Proportional to 12,153.21, 18,222.52 and 4,748.84

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Solution

The fourth proportional to 12,153.21, 18,222.52 and 4,748.84 is: 7,120.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,153.21 : 18,222.52 = 4,748.84 : x
  2. Step 2: Convert to fraction form
    12,153.21/18,222.52 = 4,748.84/x
  3. Step 3: Cross multiply
    12,153.21x = 18,222.52 × 4,748.84
  4. Step 4: Simplify right side
    12,153.21x = 86,535,908.63
  5. Step 5: Solve for x
    x = 86,535,908.63/12,153.21
  6. Step 6: Final answer
    x = 7,120.42

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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.