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Finding the Fourth Proportional to 12,288.63, 16,959.06 and 6,984.48

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Solution

The fourth proportional to 12,288.63, 16,959.06 and 6,984.48 is: 9,639.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288.63 : 16,959.06 = 6,984.48 : x
  2. Step 2: Convert to fraction form
    12,288.63/16,959.06 = 6,984.48/x
  3. Step 3: Cross multiply
    12,288.63x = 16,959.06 × 6,984.48
  4. Step 4: Simplify right side
    12,288.63x = 118,450,215.39
  5. Step 5: Solve for x
    x = 118,450,215.39/12,288.63
  6. Step 6: Final answer
    x = 9,639.01

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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.