Home / 28,631.89-42,951.93-8,912.44

Finding the Fourth Proportional to 28,631.89, 42,951.93 and 8,912.44

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Solution

The fourth proportional to 28,631.89, 42,951.93 and 8,912.44 is: 13,369.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.89 : 42,951.93 = 8,912.44 : x
  2. Step 2: Convert to fraction form
    28,631.89/42,951.93 = 8,912.44/x
  3. Step 3: Cross multiply
    28,631.89x = 42,951.93 × 8,912.44
  4. Step 4: Simplify right side
    28,631.89x = 382,806,499.01
  5. Step 5: Solve for x
    x = 382,806,499.01/28,631.89
  6. Step 6: Final answer
    x = 13,369.93

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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.