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Finding the Fourth Proportional to 18,009.90, 26,979.03 and 14,095.98

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Solution

The fourth proportional to 18,009.90, 26,979.03 and 14,095.98 is: 21,115.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,009.90 : 26,979.03 = 14,095.98 : x
  2. Step 2: Convert to fraction form
    18,009.90/26,979.03 = 14,095.98/x
  3. Step 3: Cross multiply
    18,009.90x = 26,979.03 × 14,095.98
  4. Step 4: Simplify right side
    18,009.90x = 380,295,867.30
  5. Step 5: Solve for x
    x = 380,295,867.30/18,009.90
  6. Step 6: Final answer
    x = 21,115.93

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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.