Home / 21,708.08-29,961.83-13,212.94

Finding the Fourth Proportional to 21,708.08, 29,961.83 and 13,212.94

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Solution

The fourth proportional to 21,708.08, 29,961.83 and 13,212.94 is: 18,236.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.08 : 29,961.83 = 13,212.94 : x
  2. Step 2: Convert to fraction form
    21,708.08/29,961.83 = 13,212.94/x
  3. Step 3: Cross multiply
    21,708.08x = 29,961.83 × 13,212.94
  4. Step 4: Simplify right side
    21,708.08x = 395,883,721.11
  5. Step 5: Solve for x
    x = 395,883,721.11/21,708.08
  6. Step 6: Final answer
    x = 18,236.70

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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.