Home / 18,828.06-28,209.69-13,271.46

Finding the Fourth Proportional to 18,828.06, 28,209.69 and 13,271.46

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Solution

The fourth proportional to 18,828.06, 28,209.69 and 13,271.46 is: 19,884.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828.06 : 28,209.69 = 13,271.46 : x
  2. Step 2: Convert to fraction form
    18,828.06/28,209.69 = 13,271.46/x
  3. Step 3: Cross multiply
    18,828.06x = 28,209.69 × 13,271.46
  4. Step 4: Simplify right side
    18,828.06x = 374,383,772.45
  5. Step 5: Solve for x
    x = 374,383,772.45/18,828.06
  6. Step 6: Final answer
    x = 19,884.35

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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.