Home / 21,182.72-31,790.48-11,330.28

Finding the Fourth Proportional to 21,182.72, 31,790.48 and 11,330.28

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Solution

The fourth proportional to 21,182.72, 31,790.48 and 11,330.28 is: 17,004.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.72 : 31,790.48 = 11,330.28 : x
  2. Step 2: Convert to fraction form
    21,182.72/31,790.48 = 11,330.28/x
  3. Step 3: Cross multiply
    21,182.72x = 31,790.48 × 11,330.28
  4. Step 4: Simplify right side
    21,182.72x = 360,194,983.08
  5. Step 5: Solve for x
    x = 360,194,983.08/21,182.72
  6. Step 6: Final answer
    x = 17,004.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.