Home / 20,972.32-31,477.92-10,591.36

Finding the Fourth Proportional to 20,972.32, 31,477.92 and 10,591.36

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Solution

The fourth proportional to 20,972.32, 31,477.92 and 10,591.36 is: 15,896.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.32 : 31,477.92 = 10,591.36 : x
  2. Step 2: Convert to fraction form
    20,972.32/31,477.92 = 10,591.36/x
  3. Step 3: Cross multiply
    20,972.32x = 31,477.92 × 10,591.36
  4. Step 4: Simplify right side
    20,972.32x = 333,393,982.77
  5. Step 5: Solve for x
    x = 333,393,982.77/20,972.32
  6. Step 6: Final answer
    x = 15,896.86

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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.