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Finding the Fourth Proportional to 18,538.99, 25,500.85 and 16,259.11

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Solution

The fourth proportional to 18,538.99, 25,500.85 and 16,259.11 is: 22,364.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538.99 : 25,500.85 = 16,259.11 : x
  2. Step 2: Convert to fraction form
    18,538.99/25,500.85 = 16,259.11/x
  3. Step 3: Cross multiply
    18,538.99x = 25,500.85 × 16,259.11
  4. Step 4: Simplify right side
    18,538.99x = 414,621,125.24
  5. Step 5: Solve for x
    x = 414,621,125.24/18,538.99
  6. Step 6: Final answer
    x = 22,364.82

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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.