Home / 12,285.22-16,936.42-10,389.18

Finding the Fourth Proportional to 12,285.22, 16,936.42 and 10,389.18

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Solution

The fourth proportional to 12,285.22, 16,936.42 and 10,389.18 is: 14,322.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.22 : 16,936.42 = 10,389.18 : x
  2. Step 2: Convert to fraction form
    12,285.22/16,936.42 = 10,389.18/x
  3. Step 3: Cross multiply
    12,285.22x = 16,936.42 × 10,389.18
  4. Step 4: Simplify right side
    12,285.22x = 175,955,515.94
  5. Step 5: Solve for x
    x = 175,955,515.94/12,285.22
  6. Step 6: Final answer
    x = 14,322.54

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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.