Home / 30,667.89-42,322.11-17,238.36

Finding the Fourth Proportional to 30,667.89, 42,322.11 and 17,238.36

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Solution

The fourth proportional to 30,667.89, 42,322.11 and 17,238.36 is: 23,789.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,667.89 : 42,322.11 = 17,238.36 : x
  2. Step 2: Convert to fraction form
    30,667.89/42,322.11 = 17,238.36/x
  3. Step 3: Cross multiply
    30,667.89x = 42,322.11 × 17,238.36
  4. Step 4: Simplify right side
    30,667.89x = 729,563,768.14
  5. Step 5: Solve for x
    x = 729,563,768.14/30,667.89
  6. Step 6: Final answer
    x = 23,789.17

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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.