Home / 21,287.48-29,374.62-11,856.92

Finding the Fourth Proportional to 21,287.48, 29,374.62 and 11,856.92

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Solution

The fourth proportional to 21,287.48, 29,374.62 and 11,856.92 is: 16,361.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287.48 : 29,374.62 = 11,856.92 : x
  2. Step 2: Convert to fraction form
    21,287.48/29,374.62 = 11,856.92/x
  3. Step 3: Cross multiply
    21,287.48x = 29,374.62 × 11,856.92
  4. Step 4: Simplify right side
    21,287.48x = 348,292,519.37
  5. Step 5: Solve for x
    x = 348,292,519.37/21,287.48
  6. Step 6: Final answer
    x = 16,361.38

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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.