Home / 20,355.87-28,092.14-12,396.81

Finding the Fourth Proportional to 20,355.87, 28,092.14 and 12,396.81

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Solution

The fourth proportional to 20,355.87, 28,092.14 and 12,396.81 is: 17,108.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,355.87 : 28,092.14 = 12,396.81 : x
  2. Step 2: Convert to fraction form
    20,355.87/28,092.14 = 12,396.81/x
  3. Step 3: Cross multiply
    20,355.87x = 28,092.14 × 12,396.81
  4. Step 4: Simplify right side
    20,355.87x = 348,252,860.09
  5. Step 5: Solve for x
    x = 348,252,860.09/20,355.87
  6. Step 6: Final answer
    x = 17,108.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.