Home / 21,238.96-29,308.16-11,806.72

Finding the Fourth Proportional to 21,238.96, 29,308.16 and 11,806.72

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Solution

The fourth proportional to 21,238.96, 29,308.16 and 11,806.72 is: 16,292.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.96 : 29,308.16 = 11,806.72 : x
  2. Step 2: Convert to fraction form
    21,238.96/29,308.16 = 11,806.72/x
  3. Step 3: Cross multiply
    21,238.96x = 29,308.16 × 11,806.72
  4. Step 4: Simplify right side
    21,238.96x = 346,033,238.84
  5. Step 5: Solve for x
    x = 346,033,238.84/21,238.96
  6. Step 6: Final answer
    x = 16,292.38

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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.