Home / 21,489.12-29,654.51-11,928.44

Finding the Fourth Proportional to 21,489.12, 29,654.51 and 11,928.44

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Solution

The fourth proportional to 21,489.12, 29,654.51 and 11,928.44 is: 16,460.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,489.12 : 29,654.51 = 11,928.44 : x
  2. Step 2: Convert to fraction form
    21,489.12/29,654.51 = 11,928.44/x
  3. Step 3: Cross multiply
    21,489.12x = 29,654.51 × 11,928.44
  4. Step 4: Simplify right side
    21,489.12x = 353,732,057.76
  5. Step 5: Solve for x
    x = 353,732,057.76/21,489.12
  6. Step 6: Final answer
    x = 16,460.98

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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.