Home / 18,915.05-28,376.83-5,768.75

Finding the Fourth Proportional to 18,915.05, 28,376.83 and 5,768.75

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Solution

The fourth proportional to 18,915.05, 28,376.83 and 5,768.75 is: 8,654.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.05 : 28,376.83 = 5,768.75 : x
  2. Step 2: Convert to fraction form
    18,915.05/28,376.83 = 5,768.75/x
  3. Step 3: Cross multiply
    18,915.05x = 28,376.83 × 5,768.75
  4. Step 4: Simplify right side
    18,915.05x = 163,698,916.22
  5. Step 5: Solve for x
    x = 163,698,916.22/18,915.05
  6. Step 6: Final answer
    x = 8,654.43

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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.