Home / 21,670.61-29,905.07-12,110.66

Finding the Fourth Proportional to 21,670.61, 29,905.07 and 12,110.66

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Solution

The fourth proportional to 21,670.61, 29,905.07 and 12,110.66 is: 16,712.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,670.61 : 29,905.07 = 12,110.66 : x
  2. Step 2: Convert to fraction form
    21,670.61/29,905.07 = 12,110.66/x
  3. Step 3: Cross multiply
    21,670.61x = 29,905.07 × 12,110.66
  4. Step 4: Simplify right side
    21,670.61x = 362,170,135.05
  5. Step 5: Solve for x
    x = 362,170,135.05/21,670.61
  6. Step 6: Final answer
    x = 16,712.50

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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.