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Finding the Fourth Proportional to 16,803.80, 25,213.80 and 11,862.80

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Solution

The fourth proportional to 16,803.80, 25,213.80 and 11,862.80 is: 17,799.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,803.80 : 25,213.80 = 11,862.80 : x
  2. Step 2: Convert to fraction form
    16,803.80/25,213.80 = 11,862.80/x
  3. Step 3: Cross multiply
    16,803.80x = 25,213.80 × 11,862.80
  4. Step 4: Simplify right side
    16,803.80x = 299,106,266.64
  5. Step 5: Solve for x
    x = 299,106,266.64/16,803.80
  6. Step 6: Final answer
    x = 17,799.92

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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.