Home / 25,667.11-35,440.68-19,689.31

Finding the Fourth Proportional to 25,667.11, 35,440.68 and 19,689.31

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Solution

The fourth proportional to 25,667.11, 35,440.68 and 19,689.31 is: 27,186.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,667.11 : 35,440.68 = 19,689.31 : x
  2. Step 2: Convert to fraction form
    25,667.11/35,440.68 = 19,689.31/x
  3. Step 3: Cross multiply
    25,667.11x = 35,440.68 × 19,689.31
  4. Step 4: Simplify right side
    25,667.11x = 697,802,535.13
  5. Step 5: Solve for x
    x = 697,802,535.13/25,667.11
  6. Step 6: Final answer
    x = 27,186.64

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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.