Home / 21,062.28-31,602.61-11,190.00

Finding the Fourth Proportional to 21,062.28, 31,602.61 and 11,190.00

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Solution

The fourth proportional to 21,062.28, 31,602.61 and 11,190.00 is: 16,789.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062.28 : 31,602.61 = 11,190.00 : x
  2. Step 2: Convert to fraction form
    21,062.28/31,602.61 = 11,190.00/x
  3. Step 3: Cross multiply
    21,062.28x = 31,602.61 × 11,190.00
  4. Step 4: Simplify right side
    21,062.28x = 353,633,097.69
  5. Step 5: Solve for x
    x = 353,633,097.69/21,062.28
  6. Step 6: Final answer
    x = 16,789.88

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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.