Home / 30,571.56-42,188.90-19,954.92

Finding the Fourth Proportional to 30,571.56, 42,188.90 and 19,954.92

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Solution

The fourth proportional to 30,571.56, 42,188.90 and 19,954.92 is: 27,537.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,571.56 : 42,188.90 = 19,954.92 : x
  2. Step 2: Convert to fraction form
    30,571.56/42,188.90 = 19,954.92/x
  3. Step 3: Cross multiply
    30,571.56x = 42,188.90 × 19,954.92
  4. Step 4: Simplify right side
    30,571.56x = 841,876,124.39
  5. Step 5: Solve for x
    x = 841,876,124.39/30,571.56
  6. Step 6: Final answer
    x = 27,537.89

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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.