Home / 21,354.74-29,467.30-12,400.49

Finding the Fourth Proportional to 21,354.74, 29,467.30 and 12,400.49

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Solution

The fourth proportional to 21,354.74, 29,467.30 and 12,400.49 is: 17,111.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,354.74 : 29,467.30 = 12,400.49 : x
  2. Step 2: Convert to fraction form
    21,354.74/29,467.30 = 12,400.49/x
  3. Step 3: Cross multiply
    21,354.74x = 29,467.30 × 12,400.49
  4. Step 4: Simplify right side
    21,354.74x = 365,408,896.97
  5. Step 5: Solve for x
    x = 365,408,896.97/21,354.74
  6. Step 6: Final answer
    x = 17,111.37

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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.