Home / 21,308.48-29,418.32-18,944.09

Finding the Fourth Proportional to 21,308.48, 29,418.32 and 18,944.09

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Solution

The fourth proportional to 21,308.48, 29,418.32 and 18,944.09 is: 26,154.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.48 : 29,418.32 = 18,944.09 : x
  2. Step 2: Convert to fraction form
    21,308.48/29,418.32 = 18,944.09/x
  3. Step 3: Cross multiply
    21,308.48x = 29,418.32 × 18,944.09
  4. Step 4: Simplify right side
    21,308.48x = 557,303,477.79
  5. Step 5: Solve for x
    x = 557,303,477.79/21,308.48
  6. Step 6: Final answer
    x = 26,154.06

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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.