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Finding the Fourth Proportional to 16,923.20, 25,384.80 and 12,257.60

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Solution

The fourth proportional to 16,923.20, 25,384.80 and 12,257.60 is: 18,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,923.20 : 25,384.80 = 12,257.60 : x
  2. Step 2: Convert to fraction form
    16,923.20/25,384.80 = 12,257.60/x
  3. Step 3: Cross multiply
    16,923.20x = 25,384.80 × 12,257.60
  4. Step 4: Simplify right side
    16,923.20x = 311,156,724.48
  5. Step 5: Solve for x
    x = 311,156,724.48/16,923.20
  6. Step 6: Final answer
    x = 18,386.40

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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.