Home / 21,327.76-29,431.74-12,252.88

Finding the Fourth Proportional to 21,327.76, 29,431.74 and 12,252.88

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Solution

The fourth proportional to 21,327.76, 29,431.74 and 12,252.88 is: 16,908.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.76 : 29,431.74 = 12,252.88 : x
  2. Step 2: Convert to fraction form
    21,327.76/29,431.74 = 12,252.88/x
  3. Step 3: Cross multiply
    21,327.76x = 29,431.74 × 12,252.88
  4. Step 4: Simplify right side
    21,327.76x = 360,623,578.41
  5. Step 5: Solve for x
    x = 360,623,578.41/21,327.76
  6. Step 6: Final answer
    x = 16,908.65

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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.