Home / 21,256.90-29,335.90-11,825.46

Finding the Fourth Proportional to 21,256.90, 29,335.90 and 11,825.46

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Solution

The fourth proportional to 21,256.90, 29,335.90 and 11,825.46 is: 16,319.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,256.90 : 29,335.90 = 11,825.46 : x
  2. Step 2: Convert to fraction form
    21,256.90/29,335.90 = 11,825.46/x
  3. Step 3: Cross multiply
    21,256.90x = 29,335.90 × 11,825.46
  4. Step 4: Simplify right side
    21,256.90x = 346,910,512.01
  5. Step 5: Solve for x
    x = 346,910,512.01/21,256.90
  6. Step 6: Final answer
    x = 16,319.90

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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.