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Finding the Fourth Proportional to 12,810.36, 17,671.50 and 12,448.92

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Solution

The fourth proportional to 12,810.36, 17,671.50 and 12,448.92 is: 17,172.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.36 : 17,671.50 = 12,448.92 : x
  2. Step 2: Convert to fraction form
    12,810.36/17,671.50 = 12,448.92/x
  3. Step 3: Cross multiply
    12,810.36x = 17,671.50 × 12,448.92
  4. Step 4: Simplify right side
    12,810.36x = 219,991,089.78
  5. Step 5: Solve for x
    x = 219,991,089.78/12,810.36
  6. Step 6: Final answer
    x = 17,172.90

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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.