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Finding the Fourth Proportional to 18,269.54, 27,412.98 and 12,655.84

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Solution

The fourth proportional to 18,269.54, 27,412.98 and 12,655.84 is: 18,989.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,269.54 : 27,412.98 = 12,655.84 : x
  2. Step 2: Convert to fraction form
    18,269.54/27,412.98 = 12,655.84/x
  3. Step 3: Cross multiply
    18,269.54x = 27,412.98 × 12,655.84
  4. Step 4: Simplify right side
    18,269.54x = 346,934,288.80
  5. Step 5: Solve for x
    x = 346,934,288.80/18,269.54
  6. Step 6: Final answer
    x = 18,989.77

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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.