Home / 28,972.60-40,000.62-19,912.84

Finding the Fourth Proportional to 28,972.60, 40,000.62 and 19,912.84

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Solution

The fourth proportional to 28,972.60, 40,000.62 and 19,912.84 is: 27,492.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,972.60 : 40,000.62 = 19,912.84 : x
  2. Step 2: Convert to fraction form
    28,972.60/40,000.62 = 19,912.84/x
  3. Step 3: Cross multiply
    28,972.60x = 40,000.62 × 19,912.84
  4. Step 4: Simplify right side
    28,972.60x = 796,525,945.96
  5. Step 5: Solve for x
    x = 796,525,945.96/28,972.60
  6. Step 6: Final answer
    x = 27,492.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.