Home / 12,957.45-19,436.49-9,691.29

Finding the Fourth Proportional to 12,957.45, 19,436.49 and 9,691.29

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Solution

The fourth proportional to 12,957.45, 19,436.49 and 9,691.29 is: 14,537.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,957.45 : 19,436.49 = 9,691.29 : x
  2. Step 2: Convert to fraction form
    12,957.45/19,436.49 = 9,691.29/x
  3. Step 3: Cross multiply
    12,957.45x = 19,436.49 × 9,691.29
  4. Step 4: Simplify right side
    12,957.45x = 188,364,661.17
  5. Step 5: Solve for x
    x = 188,364,661.17/12,957.45
  6. Step 6: Final answer
    x = 14,537.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.