Home / 21,188.73-29,234.52-13,239.03

Finding the Fourth Proportional to 21,188.73, 29,234.52 and 13,239.03

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Solution

The fourth proportional to 21,188.73, 29,234.52 and 13,239.03 is: 18,266.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.73 : 29,234.52 = 13,239.03 : x
  2. Step 2: Convert to fraction form
    21,188.73/29,234.52 = 13,239.03/x
  3. Step 3: Cross multiply
    21,188.73x = 29,234.52 × 13,239.03
  4. Step 4: Simplify right side
    21,188.73x = 387,036,687.32
  5. Step 5: Solve for x
    x = 387,036,687.32/21,188.73
  6. Step 6: Final answer
    x = 18,266.16

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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.