Home / 21,625.07-29,842.62-12,670.79

Finding the Fourth Proportional to 21,625.07, 29,842.62 and 12,670.79

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Solution

The fourth proportional to 21,625.07, 29,842.62 and 12,670.79 is: 17,485.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,625.07 : 29,842.62 = 12,670.79 : x
  2. Step 2: Convert to fraction form
    21,625.07/29,842.62 = 12,670.79/x
  3. Step 3: Cross multiply
    21,625.07x = 29,842.62 × 12,670.79
  4. Step 4: Simplify right side
    21,625.07x = 378,129,571.07
  5. Step 5: Solve for x
    x = 378,129,571.07/21,625.07
  6. Step 6: Final answer
    x = 17,485.70

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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.