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Finding the Fourth Proportional to 38,504.50, 53,136.21 and 21,737.50

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Solution

The fourth proportional to 38,504.50, 53,136.21 and 21,737.50 is: 29,997.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,504.50 : 53,136.21 = 21,737.50 : x
  2. Step 2: Convert to fraction form
    38,504.50/53,136.21 = 21,737.50/x
  3. Step 3: Cross multiply
    38,504.50x = 53,136.21 × 21,737.50
  4. Step 4: Simplify right side
    38,504.50x = 1,155,048,364.88
  5. Step 5: Solve for x
    x = 1,155,048,364.88/38,504.50
  6. Step 6: Final answer
    x = 29,997.75

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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.