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Finding the Fourth Proportional to 12,725.91, 17,558.10 and 7,347.92

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Solution

The fourth proportional to 12,725.91, 17,558.10 and 7,347.92 is: 10,138.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,725.91 : 17,558.10 = 7,347.92 : x
  2. Step 2: Convert to fraction form
    12,725.91/17,558.10 = 7,347.92/x
  3. Step 3: Cross multiply
    12,725.91x = 17,558.10 × 7,347.92
  4. Step 4: Simplify right side
    12,725.91x = 129,015,426.36
  5. Step 5: Solve for x
    x = 129,015,426.36/12,725.91
  6. Step 6: Final answer
    x = 10,138.01

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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.