Home / 21,134.52-29,166.06-12,180.54

Finding the Fourth Proportional to 21,134.52, 29,166.06 and 12,180.54

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Solution

The fourth proportional to 21,134.52, 29,166.06 and 12,180.54 is: 16,809.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.52 : 29,166.06 = 12,180.54 : x
  2. Step 2: Convert to fraction form
    21,134.52/29,166.06 = 12,180.54/x
  3. Step 3: Cross multiply
    21,134.52x = 29,166.06 × 12,180.54
  4. Step 4: Simplify right side
    21,134.52x = 355,258,360.47
  5. Step 5: Solve for x
    x = 355,258,360.47/21,134.52
  6. Step 6: Final answer
    x = 16,809.39

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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.