Home / 30,351.40-41,881.87-16,921.39

Finding the Fourth Proportional to 30,351.40, 41,881.87 and 16,921.39

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Solution

The fourth proportional to 30,351.40, 41,881.87 and 16,921.39 is: 23,349.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,351.40 : 41,881.87 = 16,921.39 : x
  2. Step 2: Convert to fraction form
    30,351.40/41,881.87 = 16,921.39/x
  3. Step 3: Cross multiply
    30,351.40x = 41,881.87 × 16,921.39
  4. Step 4: Simplify right side
    30,351.40x = 708,699,456.20
  5. Step 5: Solve for x
    x = 708,699,456.20/30,351.40
  6. Step 6: Final answer
    x = 23,349.81

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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.