Home / 12,127.72-16,736.31-6,822.63

Finding the Fourth Proportional to 12,127.72, 16,736.31 and 6,822.63

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Solution

The fourth proportional to 12,127.72, 16,736.31 and 6,822.63 is: 9,415.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.72 : 16,736.31 = 6,822.63 : x
  2. Step 2: Convert to fraction form
    12,127.72/16,736.31 = 6,822.63/x
  3. Step 3: Cross multiply
    12,127.72x = 16,736.31 × 6,822.63
  4. Step 4: Simplify right side
    12,127.72x = 114,185,532.90
  5. Step 5: Solve for x
    x = 114,185,532.90/12,127.72
  6. Step 6: Final answer
    x = 9,415.25

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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.