Home / 21,133.75-31,711.56-10,745.50

Finding the Fourth Proportional to 21,133.75, 31,711.56 and 10,745.50

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Solution

The fourth proportional to 21,133.75, 31,711.56 and 10,745.50 is: 16,123.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,133.75 : 31,711.56 = 10,745.50 : x
  2. Step 2: Convert to fraction form
    21,133.75/31,711.56 = 10,745.50/x
  3. Step 3: Cross multiply
    21,133.75x = 31,711.56 × 10,745.50
  4. Step 4: Simplify right side
    21,133.75x = 340,756,567.98
  5. Step 5: Solve for x
    x = 340,756,567.98/21,133.75
  6. Step 6: Final answer
    x = 16,123.81

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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.