Home / 18,921.99-26,118-10,967.79

Finding the Fourth Proportional to 18,921.99, 26,118 and 10,967.79

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Solution

The fourth proportional to 18,921.99, 26,118 and 10,967.79 is: 15,138.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.99 : 26,118 = 10,967.79 : x
  2. Step 2: Convert to fraction form
    18,921.99/26,118 = 10,967.79/x
  3. Step 3: Cross multiply
    18,921.99x = 26,118 × 10,967.79
  4. Step 4: Simplify right side
    18,921.99x = 286,456,739.22
  5. Step 5: Solve for x
    x = 286,456,739.22/18,921.99
  6. Step 6: Final answer
    x = 15,138.83

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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.