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Finding the Fourth Proportional to 12,851.70, 19,277.55 and 10,664.70

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Solution

The fourth proportional to 12,851.70, 19,277.55 and 10,664.70 is: 15,997.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,851.70 : 19,277.55 = 10,664.70 : x
  2. Step 2: Convert to fraction form
    12,851.70/19,277.55 = 10,664.70/x
  3. Step 3: Cross multiply
    12,851.70x = 19,277.55 × 10,664.70
  4. Step 4: Simplify right side
    12,851.70x = 205,589,287.49
  5. Step 5: Solve for x
    x = 205,589,287.49/12,851.70
  6. Step 6: Final answer
    x = 15,997.05

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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.