Home / 31,380.21-43,307.37-17,235.81

Finding the Fourth Proportional to 31,380.21, 43,307.37 and 17,235.81

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Solution

The fourth proportional to 31,380.21, 43,307.37 and 17,235.81 is: 23,786.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,380.21 : 43,307.37 = 17,235.81 : x
  2. Step 2: Convert to fraction form
    31,380.21/43,307.37 = 17,235.81/x
  3. Step 3: Cross multiply
    31,380.21x = 43,307.37 × 17,235.81
  4. Step 4: Simplify right side
    31,380.21x = 746,437,600.92
  5. Step 5: Solve for x
    x = 746,437,600.92/31,380.21
  6. Step 6: Final answer
    x = 23,786.89

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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.