Home / 27,883.72-38,478.67-15,136.30

Finding the Fourth Proportional to 27,883.72, 38,478.67 and 15,136.30

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Solution

The fourth proportional to 27,883.72, 38,478.67 and 15,136.30 is: 20,887.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,883.72 : 38,478.67 = 15,136.30 : x
  2. Step 2: Convert to fraction form
    27,883.72/38,478.67 = 15,136.30/x
  3. Step 3: Cross multiply
    27,883.72x = 38,478.67 × 15,136.30
  4. Step 4: Simplify right side
    27,883.72x = 582,424,692.72
  5. Step 5: Solve for x
    x = 582,424,692.72/27,883.72
  6. Step 6: Final answer
    x = 20,887.63

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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.