Home / 18,912.98-28,388.04-14,428.95

Finding the Fourth Proportional to 18,912.98, 28,388.04 and 14,428.95

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Solution

The fourth proportional to 18,912.98, 28,388.04 and 14,428.95 is: 21,657.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.98 : 28,388.04 = 14,428.95 : x
  2. Step 2: Convert to fraction form
    18,912.98/28,388.04 = 14,428.95/x
  3. Step 3: Cross multiply
    18,912.98x = 28,388.04 × 14,428.95
  4. Step 4: Simplify right side
    18,912.98x = 409,609,449.19
  5. Step 5: Solve for x
    x = 409,609,449.19/18,912.98
  6. Step 6: Final answer
    x = 21,657.58

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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.