Home / 30,725.71-42,404.66-18,796.98

Finding the Fourth Proportional to 30,725.71, 42,404.66 and 18,796.98

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Solution

The fourth proportional to 30,725.71, 42,404.66 and 18,796.98 is: 25,941.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,725.71 : 42,404.66 = 18,796.98 : x
  2. Step 2: Convert to fraction form
    30,725.71/42,404.66 = 18,796.98/x
  3. Step 3: Cross multiply
    30,725.71x = 42,404.66 × 18,796.98
  4. Step 4: Simplify right side
    30,725.71x = 797,079,239.92
  5. Step 5: Solve for x
    x = 797,079,239.92/30,725.71
  6. Step 6: Final answer
    x = 25,941.77

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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.