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Finding the Fourth Proportional to 39,493.50, 54,501.03 and 21,829.50

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Solution

The fourth proportional to 39,493.50, 54,501.03 and 21,829.50 is: 30,124.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,493.50 : 54,501.03 = 21,829.50 : x
  2. Step 2: Convert to fraction form
    39,493.50/54,501.03 = 21,829.50/x
  3. Step 3: Cross multiply
    39,493.50x = 54,501.03 × 21,829.50
  4. Step 4: Simplify right side
    39,493.50x = 1,189,730,234.39
  5. Step 5: Solve for x
    x = 1,189,730,234.39/39,493.50
  6. Step 6: Final answer
    x = 30,124.71

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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.