Home / 18,725.68-28,074.42-11,328.58

Finding the Fourth Proportional to 18,725.68, 28,074.42 and 11,328.58

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Solution

The fourth proportional to 18,725.68, 28,074.42 and 11,328.58 is: 16,984.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.68 : 28,074.42 = 11,328.58 : x
  2. Step 2: Convert to fraction form
    18,725.68/28,074.42 = 11,328.58/x
  3. Step 3: Cross multiply
    18,725.68x = 28,074.42 × 11,328.58
  4. Step 4: Simplify right side
    18,725.68x = 318,043,312.92
  5. Step 5: Solve for x
    x = 318,043,312.92/18,725.68
  6. Step 6: Final answer
    x = 16,984.34

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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.