Home / 21,222.61-31,811.71-11,848.88

Finding the Fourth Proportional to 21,222.61, 31,811.71 and 11,848.88

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Solution

The fourth proportional to 21,222.61, 31,811.71 and 11,848.88 is: 17,760.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.61 : 31,811.71 = 11,848.88 : x
  2. Step 2: Convert to fraction form
    21,222.61/31,811.71 = 11,848.88/x
  3. Step 3: Cross multiply
    21,222.61x = 31,811.71 × 11,848.88
  4. Step 4: Simplify right side
    21,222.61x = 376,933,134.38
  5. Step 5: Solve for x
    x = 376,933,134.38/21,222.61
  6. Step 6: Final answer
    x = 17,760.92

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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.