Home / 18,914.90-28,376.40-5,768.60

Finding the Fourth Proportional to 18,914.90, 28,376.40 and 5,768.60

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Solution

The fourth proportional to 18,914.90, 28,376.40 and 5,768.60 is: 8,654.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.90 : 28,376.40 = 5,768.60 : x
  2. Step 2: Convert to fraction form
    18,914.90/28,376.40 = 5,768.60/x
  3. Step 3: Cross multiply
    18,914.90x = 28,376.40 × 5,768.60
  4. Step 4: Simplify right side
    18,914.90x = 163,692,101.04
  5. Step 5: Solve for x
    x = 163,692,101.04/18,914.90
  6. Step 6: Final answer
    x = 8,654.14

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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.