Home / 21,931.32-32,867.82-18,995.88

Finding the Fourth Proportional to 21,931.32, 32,867.82 and 18,995.88

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Solution

The fourth proportional to 21,931.32, 32,867.82 and 18,995.88 is: 28,468.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.32 : 32,867.82 = 18,995.88 : x
  2. Step 2: Convert to fraction form
    21,931.32/32,867.82 = 18,995.88/x
  3. Step 3: Cross multiply
    21,931.32x = 32,867.82 × 18,995.88
  4. Step 4: Simplify right side
    21,931.32x = 624,353,164.58
  5. Step 5: Solve for x
    x = 624,353,164.58/21,931.32
  6. Step 6: Final answer
    x = 28,468.56

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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.