Home / 21,668.61-29,902.31-12,108.66

Finding the Fourth Proportional to 21,668.61, 29,902.31 and 12,108.66

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Solution

The fourth proportional to 21,668.61, 29,902.31 and 12,108.66 is: 16,709.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,668.61 : 29,902.31 = 12,108.66 : x
  2. Step 2: Convert to fraction form
    21,668.61/29,902.31 = 12,108.66/x
  3. Step 3: Cross multiply
    21,668.61x = 29,902.31 × 12,108.66
  4. Step 4: Simplify right side
    21,668.61x = 362,076,905.00
  5. Step 5: Solve for x
    x = 362,076,905.00/21,668.61
  6. Step 6: Final answer
    x = 16,709.74

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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.