Home / 30,725.96-42,405-18,797.23

Finding the Fourth Proportional to 30,725.96, 42,405 and 18,797.23

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Solution

The fourth proportional to 30,725.96, 42,405 and 18,797.23 is: 25,942.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,725.96 : 42,405 = 18,797.23 : x
  2. Step 2: Convert to fraction form
    30,725.96/42,405 = 18,797.23/x
  3. Step 3: Cross multiply
    30,725.96x = 42,405 × 18,797.23
  4. Step 4: Simplify right side
    30,725.96x = 797,096,326.13
  5. Step 5: Solve for x
    x = 797,096,326.13/30,725.96
  6. Step 6: Final answer
    x = 25,942.11

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Double scale
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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.