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Finding the Fourth Proportional to 12,957.58, 17,883.98 and 8,425.87

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Solution

The fourth proportional to 12,957.58, 17,883.98 and 8,425.87 is: 11,629.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,957.58 : 17,883.98 = 8,425.87 : x
  2. Step 2: Convert to fraction form
    12,957.58/17,883.98 = 8,425.87/x
  3. Step 3: Cross multiply
    12,957.58x = 17,883.98 × 8,425.87
  4. Step 4: Simplify right side
    12,957.58x = 150,688,090.56
  5. Step 5: Solve for x
    x = 150,688,090.56/12,957.58
  6. Step 6: Final answer
    x = 11,629.34

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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.