Home / 30,749.05-42,421.37-18,791.63

Finding the Fourth Proportional to 30,749.05, 42,421.37 and 18,791.63

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Solution

The fourth proportional to 30,749.05, 42,421.37 and 18,791.63 is: 25,924.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,749.05 : 42,421.37 = 18,791.63 : x
  2. Step 2: Convert to fraction form
    30,749.05/42,421.37 = 18,791.63/x
  3. Step 3: Cross multiply
    30,749.05x = 42,421.37 × 18,791.63
  4. Step 4: Simplify right side
    30,749.05x = 797,166,647.85
  5. Step 5: Solve for x
    x = 797,166,647.85/30,749.05
  6. Step 6: Final answer
    x = 25,924.92

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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.