Home / 21,213.16-29,273.34-11,782.32

Finding the Fourth Proportional to 21,213.16, 29,273.34 and 11,782.32

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Solution

The fourth proportional to 21,213.16, 29,273.34 and 11,782.32 is: 16,259.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.16 : 29,273.34 = 11,782.32 : x
  2. Step 2: Convert to fraction form
    21,213.16/29,273.34 = 11,782.32/x
  3. Step 3: Cross multiply
    21,213.16x = 29,273.34 × 11,782.32
  4. Step 4: Simplify right side
    21,213.16x = 344,907,859.35
  5. Step 5: Solve for x
    x = 344,907,859.35/21,213.16
  6. Step 6: Final answer
    x = 16,259.15

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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.