Home / 21,186.71-29,238.45-11,626.89

Finding the Fourth Proportional to 21,186.71, 29,238.45 and 11,626.89

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Solution

The fourth proportional to 21,186.71, 29,238.45 and 11,626.89 is: 16,045.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.71 : 29,238.45 = 11,626.89 : x
  2. Step 2: Convert to fraction form
    21,186.71/29,238.45 = 11,626.89/x
  3. Step 3: Cross multiply
    21,186.71x = 29,238.45 × 11,626.89
  4. Step 4: Simplify right side
    21,186.71x = 339,952,296.34
  5. Step 5: Solve for x
    x = 339,952,296.34/21,186.71
  6. Step 6: Final answer
    x = 16,045.54

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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.