Home / 21,370.44-29,489.10-12,418.32

Finding the Fourth Proportional to 21,370.44, 29,489.10 and 12,418.32

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Solution

The fourth proportional to 21,370.44, 29,489.10 and 12,418.32 is: 17,136.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,370.44 : 29,489.10 = 12,418.32 : x
  2. Step 2: Convert to fraction form
    21,370.44/29,489.10 = 12,418.32/x
  3. Step 3: Cross multiply
    21,370.44x = 29,489.10 × 12,418.32
  4. Step 4: Simplify right side
    21,370.44x = 366,205,080.31
  5. Step 5: Solve for x
    x = 366,205,080.31/21,370.44
  6. Step 6: Final answer
    x = 17,136.06

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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.