Home / 31,419.63-47,145.51-20,896.85

Finding the Fourth Proportional to 31,419.63, 47,145.51 and 20,896.85

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Solution

The fourth proportional to 31,419.63, 47,145.51 and 20,896.85 is: 31,355.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,419.63 : 47,145.51 = 20,896.85 : x
  2. Step 2: Convert to fraction form
    31,419.63/47,145.51 = 20,896.85/x
  3. Step 3: Cross multiply
    31,419.63x = 47,145.51 × 20,896.85
  4. Step 4: Simplify right side
    31,419.63x = 985,192,768.51
  5. Step 5: Solve for x
    x = 985,192,768.51/31,419.63
  6. Step 6: Final answer
    x = 31,355.96

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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.