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Finding the Fourth Proportional to 18,866.64, 26,009.92 and 15,051.22

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Solution

The fourth proportional to 18,866.64, 26,009.92 and 15,051.22 is: 20,749.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,866.64 : 26,009.92 = 15,051.22 : x
  2. Step 2: Convert to fraction form
    18,866.64/26,009.92 = 15,051.22/x
  3. Step 3: Cross multiply
    18,866.64x = 26,009.92 × 15,051.22
  4. Step 4: Simplify right side
    18,866.64x = 391,481,028.10
  5. Step 5: Solve for x
    x = 391,481,028.10/18,866.64
  6. Step 6: Final answer
    x = 20,749.91

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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.