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Finding the Fourth Proportional to 18,715, 25,844.52 and 14,728.99

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Solution

The fourth proportional to 18,715, 25,844.52 and 14,728.99 is: 20,340.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715 : 25,844.52 = 14,728.99 : x
  2. Step 2: Convert to fraction form
    18,715/25,844.52 = 14,728.99/x
  3. Step 3: Cross multiply
    18,715x = 25,844.52 × 14,728.99
  4. Step 4: Simplify right side
    18,715x = 380,663,676.63
  5. Step 5: Solve for x
    x = 380,663,676.63/18,715
  6. Step 6: Final answer
    x = 20,340.03

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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.