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Finding the Fourth Proportional to 26,912.50, 37,139.25 and 15,136.50

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Solution

The fourth proportional to 26,912.50, 37,139.25 and 15,136.50 is: 20,888.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,912.50 : 37,139.25 = 15,136.50 : x
  2. Step 2: Convert to fraction form
    26,912.50/37,139.25 = 15,136.50/x
  3. Step 3: Cross multiply
    26,912.50x = 37,139.25 × 15,136.50
  4. Step 4: Simplify right side
    26,912.50x = 562,158,257.63
  5. Step 5: Solve for x
    x = 562,158,257.63/26,912.50
  6. Step 6: Final answer
    x = 20,888.37

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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.