Home / 21,048.64-29,047.26-11,489.20

Finding the Fourth Proportional to 21,048.64, 29,047.26 and 11,489.20

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Solution

The fourth proportional to 21,048.64, 29,047.26 and 11,489.20 is: 15,855.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,048.64 : 29,047.26 = 11,489.20 : x
  2. Step 2: Convert to fraction form
    21,048.64/29,047.26 = 11,489.20/x
  3. Step 3: Cross multiply
    21,048.64x = 29,047.26 × 11,489.20
  4. Step 4: Simplify right side
    21,048.64x = 333,729,779.59
  5. Step 5: Solve for x
    x = 333,729,779.59/21,048.64
  6. Step 6: Final answer
    x = 15,855.17

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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.