Home / 21,188.13-29,239.59-11,628.07

Finding the Fourth Proportional to 21,188.13, 29,239.59 and 11,628.07

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Solution

The fourth proportional to 21,188.13, 29,239.59 and 11,628.07 is: 16,046.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.13 : 29,239.59 = 11,628.07 : x
  2. Step 2: Convert to fraction form
    21,188.13/29,239.59 = 11,628.07/x
  3. Step 3: Cross multiply
    21,188.13x = 29,239.59 × 11,628.07
  4. Step 4: Simplify right side
    21,188.13x = 339,999,999.29
  5. Step 5: Solve for x
    x = 339,999,999.29/21,188.13
  6. Step 6: Final answer
    x = 16,046.72

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1.5x scale

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.