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Finding the Fourth Proportional to 18,967.16, 26,173.68 and 11,009

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Solution

The fourth proportional to 18,967.16, 26,173.68 and 11,009 is: 15,191.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,967.16 : 26,173.68 = 11,009 : x
  2. Step 2: Convert to fraction form
    18,967.16/26,173.68 = 11,009/x
  3. Step 3: Cross multiply
    18,967.16x = 26,173.68 × 11,009
  4. Step 4: Simplify right side
    18,967.16x = 288,146,043.12
  5. Step 5: Solve for x
    x = 288,146,043.12/18,967.16
  6. Step 6: Final answer
    x = 15,191.84

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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.