Home / 21,150.36-29,188.08-12,762

Finding the Fourth Proportional to 21,150.36, 29,188.08 and 12,762

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Solution

The fourth proportional to 21,150.36, 29,188.08 and 12,762 is: 17,611.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.36 : 29,188.08 = 12,762 : x
  2. Step 2: Convert to fraction form
    21,150.36/29,188.08 = 12,762/x
  3. Step 3: Cross multiply
    21,150.36x = 29,188.08 × 12,762
  4. Step 4: Simplify right side
    21,150.36x = 372,498,276.96
  5. Step 5: Solve for x
    x = 372,498,276.96/21,150.36
  6. Step 6: Final answer
    x = 17,611.91

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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.