Home / 20,868.29-31,288.60-6,823.40

Finding the Fourth Proportional to 20,868.29, 31,288.60 and 6,823.40

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Solution

The fourth proportional to 20,868.29, 31,288.60 and 6,823.40 is: 10,230.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.29 : 31,288.60 = 6,823.40 : x
  2. Step 2: Convert to fraction form
    20,868.29/31,288.60 = 6,823.40/x
  3. Step 3: Cross multiply
    20,868.29x = 31,288.60 × 6,823.40
  4. Step 4: Simplify right side
    20,868.29x = 213,494,661.32
  5. Step 5: Solve for x
    x = 213,494,661.32/20,868.29
  6. Step 6: Final answer
    x = 10,230.58

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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.