Home / 21,257.94-31,872.46-11,904.38

Finding the Fourth Proportional to 21,257.94, 31,872.46 and 11,904.38

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Solution

The fourth proportional to 21,257.94, 31,872.46 and 11,904.38 is: 17,848.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.94 : 31,872.46 = 11,904.38 : x
  2. Step 2: Convert to fraction form
    21,257.94/31,872.46 = 11,904.38/x
  3. Step 3: Cross multiply
    21,257.94x = 31,872.46 × 11,904.38
  4. Step 4: Simplify right side
    21,257.94x = 379,421,875.37
  5. Step 5: Solve for x
    x = 379,421,875.37/21,257.94
  6. Step 6: Final answer
    x = 17,848.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.