Home / 21,303.90-29,398.77-11,872.26

Finding the Fourth Proportional to 21,303.90, 29,398.77 and 11,872.26

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Solution

The fourth proportional to 21,303.90, 29,398.77 and 11,872.26 is: 16,383.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.90 : 29,398.77 = 11,872.26 : x
  2. Step 2: Convert to fraction form
    21,303.90/29,398.77 = 11,872.26/x
  3. Step 3: Cross multiply
    21,303.90x = 29,398.77 × 11,872.26
  4. Step 4: Simplify right side
    21,303.90x = 349,029,841.12
  5. Step 5: Solve for x
    x = 349,029,841.12/21,303.90
  6. Step 6: Final answer
    x = 16,383.38

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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.