Home / 13,869.90-20,792.70-8,317.35

Finding the Fourth Proportional to 13,869.90, 20,792.70 and 8,317.35

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Solution

The fourth proportional to 13,869.90, 20,792.70 and 8,317.35 is: 12,468.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.90 : 20,792.70 = 8,317.35 : x
  2. Step 2: Convert to fraction form
    13,869.90/20,792.70 = 8,317.35/x
  3. Step 3: Cross multiply
    13,869.90x = 20,792.70 × 8,317.35
  4. Step 4: Simplify right side
    13,869.90x = 172,940,163.35
  5. Step 5: Solve for x
    x = 172,940,163.35/13,869.90
  6. Step 6: Final answer
    x = 12,468.74

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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.