Home / 13,135.06-19,702.59-7,929.94

Finding the Fourth Proportional to 13,135.06, 19,702.59 and 7,929.94

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Solution

The fourth proportional to 13,135.06, 19,702.59 and 7,929.94 is: 11,894.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.06 : 19,702.59 = 7,929.94 : x
  2. Step 2: Convert to fraction form
    13,135.06/19,702.59 = 7,929.94/x
  3. Step 3: Cross multiply
    13,135.06x = 19,702.59 × 7,929.94
  4. Step 4: Simplify right side
    13,135.06x = 156,240,356.54
  5. Step 5: Solve for x
    x = 156,240,356.54/13,135.06
  6. Step 6: Final answer
    x = 11,894.91

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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.