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Finding the Fourth Proportional to 15,914.48, 21,961.80 and 8,840.88

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Solution

The fourth proportional to 15,914.48, 21,961.80 and 8,840.88 is: 12,200.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,914.48 : 21,961.80 = 8,840.88 : x
  2. Step 2: Convert to fraction form
    15,914.48/21,961.80 = 8,840.88/x
  3. Step 3: Cross multiply
    15,914.48x = 21,961.80 × 8,840.88
  4. Step 4: Simplify right side
    15,914.48x = 194,161,638.38
  5. Step 5: Solve for x
    x = 194,161,638.38/15,914.48
  6. Step 6: Final answer
    x = 12,200.31

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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.