Home / 21,296.36-29,388.30-13,342.88

Finding the Fourth Proportional to 21,296.36, 29,388.30 and 13,342.88

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Solution

The fourth proportional to 21,296.36, 29,388.30 and 13,342.88 is: 18,412.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,296.36 : 29,388.30 = 13,342.88 : x
  2. Step 2: Convert to fraction form
    21,296.36/29,388.30 = 13,342.88/x
  3. Step 3: Cross multiply
    21,296.36x = 29,388.30 × 13,342.88
  4. Step 4: Simplify right side
    21,296.36x = 392,124,560.30
  5. Step 5: Solve for x
    x = 392,124,560.30/21,296.36
  6. Step 6: Final answer
    x = 18,412.75

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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.