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Finding the Fourth Proportional to 18,666.68, 27,995.85 and 11,260.96

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Solution

The fourth proportional to 18,666.68, 27,995.85 and 11,260.96 is: 16,888.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.68 : 27,995.85 = 11,260.96 : x
  2. Step 2: Convert to fraction form
    18,666.68/27,995.85 = 11,260.96/x
  3. Step 3: Cross multiply
    18,666.68x = 27,995.85 × 11,260.96
  4. Step 4: Simplify right side
    18,666.68x = 315,260,077.03
  5. Step 5: Solve for x
    x = 315,260,077.03/18,666.68
  6. Step 6: Final answer
    x = 16,888.93

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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.