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Finding the Fourth Proportional to 39,094.70, 53,950.79 and 21,189.69

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Solution

The fourth proportional to 39,094.70, 53,950.79 and 21,189.69 is: 29,241.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,094.70 : 53,950.79 = 21,189.69 : x
  2. Step 2: Convert to fraction form
    39,094.70/53,950.79 = 21,189.69/x
  3. Step 3: Cross multiply
    39,094.70x = 53,950.79 × 21,189.69
  4. Step 4: Simplify right side
    39,094.70x = 1,143,200,409.41
  5. Step 5: Solve for x
    x = 1,143,200,409.41/39,094.70
  6. Step 6: Final answer
    x = 29,241.82

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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.