Home / 20,862.90-31,299.48-6,823.74

Finding the Fourth Proportional to 20,862.90, 31,299.48 and 6,823.74

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Solution

The fourth proportional to 20,862.90, 31,299.48 and 6,823.74 is: 10,237.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.90 : 31,299.48 = 6,823.74 : x
  2. Step 2: Convert to fraction form
    20,862.90/31,299.48 = 6,823.74/x
  3. Step 3: Cross multiply
    20,862.90x = 31,299.48 × 6,823.74
  4. Step 4: Simplify right side
    20,862.90x = 213,579,513.66
  5. Step 5: Solve for x
    x = 213,579,513.66/20,862.90
  6. Step 6: Final answer
    x = 10,237.29

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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.