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Finding the Fourth Proportional to 36,990.50, 51,047.07 and 20,223.50

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Solution

The fourth proportional to 36,990.50, 51,047.07 and 20,223.50 is: 27,908.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,990.50 : 51,047.07 = 20,223.50 : x
  2. Step 2: Convert to fraction form
    36,990.50/51,047.07 = 20,223.50/x
  3. Step 3: Cross multiply
    36,990.50x = 51,047.07 × 20,223.50
  4. Step 4: Simplify right side
    36,990.50x = 1,032,350,420.15
  5. Step 5: Solve for x
    x = 1,032,350,420.15/36,990.50
  6. Step 6: Final answer
    x = 27,908.53

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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.