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Finding the Fourth Proportional to 18,412.92, 25,406.76 and 17,478.84

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Solution

The fourth proportional to 18,412.92, 25,406.76 and 17,478.84 is: 24,117.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.92 : 25,406.76 = 17,478.84 : x
  2. Step 2: Convert to fraction form
    18,412.92/25,406.76 = 17,478.84/x
  3. Step 3: Cross multiply
    18,412.92x = 25,406.76 × 17,478.84
  4. Step 4: Simplify right side
    18,412.92x = 444,080,692.96
  5. Step 5: Solve for x
    x = 444,080,692.96/18,412.92
  6. Step 6: Final answer
    x = 24,117.89

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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.