Home / 12,188.40-16,821.36-10,195.44

Finding the Fourth Proportional to 12,188.40, 16,821.36 and 10,195.44

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Solution

The fourth proportional to 12,188.40, 16,821.36 and 10,195.44 is: 14,070.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.40 : 16,821.36 = 10,195.44 : x
  2. Step 2: Convert to fraction form
    12,188.40/16,821.36 = 10,195.44/x
  3. Step 3: Cross multiply
    12,188.40x = 16,821.36 × 10,195.44
  4. Step 4: Simplify right side
    12,188.40x = 171,501,166.60
  5. Step 5: Solve for x
    x = 171,501,166.60/12,188.40
  6. Step 6: Final answer
    x = 14,070.85

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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.