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Finding the Fourth Proportional to 12,490.68, 18,736.02 and 3,725.58

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Solution

The fourth proportional to 12,490.68, 18,736.02 and 3,725.58 is: 5,588.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.68 : 18,736.02 = 3,725.58 : x
  2. Step 2: Convert to fraction form
    12,490.68/18,736.02 = 3,725.58/x
  3. Step 3: Cross multiply
    12,490.68x = 18,736.02 × 3,725.58
  4. Step 4: Simplify right side
    12,490.68x = 69,802,541.39
  5. Step 5: Solve for x
    x = 69,802,541.39/12,490.68
  6. Step 6: Final answer
    x = 5,588.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.