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Finding the Fourth Proportional to 18,409.60, 25,454.40 and 16,076.80

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Solution

The fourth proportional to 18,409.60, 25,454.40 and 16,076.80 is: 22,228.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,409.60 : 25,454.40 = 16,076.80 : x
  2. Step 2: Convert to fraction form
    18,409.60/25,454.40 = 16,076.80/x
  3. Step 3: Cross multiply
    18,409.60x = 25,454.40 × 16,076.80
  4. Step 4: Simplify right side
    18,409.60x = 409,225,297.92
  5. Step 5: Solve for x
    x = 409,225,297.92/18,409.60
  6. Step 6: Final answer
    x = 22,228.91

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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.