Home / 21,310.64-29,410.08-11,879.48

Finding the Fourth Proportional to 21,310.64, 29,410.08 and 11,879.48

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Solution

The fourth proportional to 21,310.64, 29,410.08 and 11,879.48 is: 16,394.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.64 : 29,410.08 = 11,879.48 : x
  2. Step 2: Convert to fraction form
    21,310.64/29,410.08 = 11,879.48/x
  3. Step 3: Cross multiply
    21,310.64x = 29,410.08 × 11,879.48
  4. Step 4: Simplify right side
    21,310.64x = 349,376,457.16
  5. Step 5: Solve for x
    x = 349,376,457.16/21,310.64
  6. Step 6: Final answer
    x = 16,394.46

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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.