Home / 13,056.20-19,584.30-12,861.80

Finding the Fourth Proportional to 13,056.20, 19,584.30 and 12,861.80

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Solution

The fourth proportional to 13,056.20, 19,584.30 and 12,861.80 is: 19,292.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,056.20 : 19,584.30 = 12,861.80 : x
  2. Step 2: Convert to fraction form
    13,056.20/19,584.30 = 12,861.80/x
  3. Step 3: Cross multiply
    13,056.20x = 19,584.30 × 12,861.80
  4. Step 4: Simplify right side
    13,056.20x = 251,889,349.74
  5. Step 5: Solve for x
    x = 251,889,349.74/13,056.20
  6. Step 6: Final answer
    x = 19,292.70

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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.