Home / 21,336.88-29,444.80-11,905.44

Finding the Fourth Proportional to 21,336.88, 29,444.80 and 11,905.44

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Solution

The fourth proportional to 21,336.88, 29,444.80 and 11,905.44 is: 16,429.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.88 : 29,444.80 = 11,905.44 : x
  2. Step 2: Convert to fraction form
    21,336.88/29,444.80 = 11,905.44/x
  3. Step 3: Cross multiply
    21,336.88x = 29,444.80 × 11,905.44
  4. Step 4: Simplify right side
    21,336.88x = 350,553,299.71
  5. Step 5: Solve for x
    x = 350,553,299.71/21,336.88
  6. Step 6: Final answer
    x = 16,429.45

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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.