Home / 30,434.40-45,652.20-13,791.36

Finding the Fourth Proportional to 30,434.40, 45,652.20 and 13,791.36

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Solution

The fourth proportional to 30,434.40, 45,652.20 and 13,791.36 is: 20,687.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,434.40 : 45,652.20 = 13,791.36 : x
  2. Step 2: Convert to fraction form
    30,434.40/45,652.20 = 13,791.36/x
  3. Step 3: Cross multiply
    30,434.40x = 45,652.20 × 13,791.36
  4. Step 4: Simplify right side
    30,434.40x = 629,605,924.99
  5. Step 5: Solve for x
    x = 629,605,924.99/30,434.40
  6. Step 6: Final answer
    x = 20,687.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.