Home / 12,128.10-16,736.60-6,822.92

Finding the Fourth Proportional to 12,128.10, 16,736.60 and 6,822.92

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Solution

The fourth proportional to 12,128.10, 16,736.60 and 6,822.92 is: 9,415.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.10 : 16,736.60 = 6,822.92 : x
  2. Step 2: Convert to fraction form
    12,128.10/16,736.60 = 6,822.92/x
  3. Step 3: Cross multiply
    12,128.10x = 16,736.60 × 6,822.92
  4. Step 4: Simplify right side
    12,128.10x = 114,192,482.87
  5. Step 5: Solve for x
    x = 114,192,482.87/12,128.10
  6. Step 6: Final answer
    x = 9,415.53

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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.