Home / 21,060.48-29,060.64-11,986.02

Finding the Fourth Proportional to 21,060.48, 29,060.64 and 11,986.02

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Solution

The fourth proportional to 21,060.48, 29,060.64 and 11,986.02 is: 16,539.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.48 : 29,060.64 = 11,986.02 : x
  2. Step 2: Convert to fraction form
    21,060.48/29,060.64 = 11,986.02/x
  3. Step 3: Cross multiply
    21,060.48x = 29,060.64 × 11,986.02
  4. Step 4: Simplify right side
    21,060.48x = 348,321,412.25
  5. Step 5: Solve for x
    x = 348,321,412.25/21,060.48
  6. Step 6: Final answer
    x = 16,539.10

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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.