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Finding the Fourth Proportional to 13,801.76, 19,043.80 and 8,766.80

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Solution

The fourth proportional to 13,801.76, 19,043.80 and 8,766.80 is: 12,096.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,801.76 : 19,043.80 = 8,766.80 : x
  2. Step 2: Convert to fraction form
    13,801.76/19,043.80 = 8,766.80/x
  3. Step 3: Cross multiply
    13,801.76x = 19,043.80 × 8,766.80
  4. Step 4: Simplify right side
    13,801.76x = 166,953,068.70
  5. Step 5: Solve for x
    x = 166,953,068.70/13,801.76
  6. Step 6: Final answer
    x = 12,096.51

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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.