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Finding the Fourth Proportional to 12,801.53, 19,185.89 and 9,873.68

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Solution

The fourth proportional to 12,801.53, 19,185.89 and 9,873.68 is: 14,797.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,801.53 : 19,185.89 = 9,873.68 : x
  2. Step 2: Convert to fraction form
    12,801.53/19,185.89 = 9,873.68/x
  3. Step 3: Cross multiply
    12,801.53x = 19,185.89 × 9,873.68
  4. Step 4: Simplify right side
    12,801.53x = 189,435,193.08
  5. Step 5: Solve for x
    x = 189,435,193.08/12,801.53
  6. Step 6: Final answer
    x = 14,797.86

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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.