Home / 39,177.06-54,064-21,271.70

Finding the Fourth Proportional to 39,177.06, 54,064 and 21,271.70

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Solution

The fourth proportional to 39,177.06, 54,064 and 21,271.70 is: 29,354.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,177.06 : 54,064 = 21,271.70 : x
  2. Step 2: Convert to fraction form
    39,177.06/54,064 = 21,271.70/x
  3. Step 3: Cross multiply
    39,177.06x = 54,064 × 21,271.70
  4. Step 4: Simplify right side
    39,177.06x = 1,150,033,188.80
  5. Step 5: Solve for x
    x = 1,150,033,188.80/39,177.06
  6. Step 6: Final answer
    x = 29,354.76

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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.