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Finding the Fourth Proportional to 12,411.63, 17,128.04 and 6,746.37

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Solution

The fourth proportional to 12,411.63, 17,128.04 and 6,746.37 is: 9,309.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,411.63 : 17,128.04 = 6,746.37 : x
  2. Step 2: Convert to fraction form
    12,411.63/17,128.04 = 6,746.37/x
  3. Step 3: Cross multiply
    12,411.63x = 17,128.04 × 6,746.37
  4. Step 4: Simplify right side
    12,411.63x = 115,551,975.84
  5. Step 5: Solve for x
    x = 115,551,975.84/12,411.63
  6. Step 6: Final answer
    x = 9,309.98

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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.