Home / 21,213.72-29,275.16-11,782.26

Finding the Fourth Proportional to 21,213.72, 29,275.16 and 11,782.26

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Solution

The fourth proportional to 21,213.72, 29,275.16 and 11,782.26 is: 16,259.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.72 : 29,275.16 = 11,782.26 : x
  2. Step 2: Convert to fraction form
    21,213.72/29,275.16 = 11,782.26/x
  3. Step 3: Cross multiply
    21,213.72x = 29,275.16 × 11,782.26
  4. Step 4: Simplify right side
    21,213.72x = 344,927,487.75
  5. Step 5: Solve for x
    x = 344,927,487.75/21,213.72
  6. Step 6: Final answer
    x = 16,259.64

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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.