Home / 20,932.84-31,399.26-6,894.28

Finding the Fourth Proportional to 20,932.84, 31,399.26 and 6,894.28

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Solution

The fourth proportional to 20,932.84, 31,399.26 and 6,894.28 is: 10,341.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.84 : 31,399.26 = 6,894.28 : x
  2. Step 2: Convert to fraction form
    20,932.84/31,399.26 = 6,894.28/x
  3. Step 3: Cross multiply
    20,932.84x = 31,399.26 × 6,894.28
  4. Step 4: Simplify right side
    20,932.84x = 216,475,290.23
  5. Step 5: Solve for x
    x = 216,475,290.23/20,932.84
  6. Step 6: Final answer
    x = 10,341.42

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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.