Home / 21,187.79-29,240.00-11,628.02

Finding the Fourth Proportional to 21,187.79, 29,240.00 and 11,628.02

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Solution

The fourth proportional to 21,187.79, 29,240.00 and 11,628.02 is: 16,047.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.79 : 29,240.00 = 11,628.02 : x
  2. Step 2: Convert to fraction form
    21,187.79/29,240.00 = 11,628.02/x
  3. Step 3: Cross multiply
    21,187.79x = 29,240.00 × 11,628.02
  4. Step 4: Simplify right side
    21,187.79x = 340,003,144.06
  5. Step 5: Solve for x
    x = 340,003,144.06/21,187.79
  6. Step 6: Final answer
    x = 16,047.12

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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.