Home / 21,456.48-29,608.72-12,505.44

Finding the Fourth Proportional to 21,456.48, 29,608.72 and 12,505.44

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Solution

The fourth proportional to 21,456.48, 29,608.72 and 12,505.44 is: 17,256.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,456.48 : 29,608.72 = 12,505.44 : x
  2. Step 2: Convert to fraction form
    21,456.48/29,608.72 = 12,505.44/x
  3. Step 3: Cross multiply
    21,456.48x = 29,608.72 × 12,505.44
  4. Step 4: Simplify right side
    21,456.48x = 370,270,071.44
  5. Step 5: Solve for x
    x = 370,270,071.44/21,456.48
  6. Step 6: Final answer
    x = 17,256.79

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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.