Home / 21,621.48-29,837.82-12,669.24

Finding the Fourth Proportional to 21,621.48, 29,837.82 and 12,669.24

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Solution

The fourth proportional to 21,621.48, 29,837.82 and 12,669.24 is: 17,483.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.48 : 29,837.82 = 12,669.24 : x
  2. Step 2: Convert to fraction form
    21,621.48/29,837.82 = 12,669.24/x
  3. Step 3: Cross multiply
    21,621.48x = 29,837.82 × 12,669.24
  4. Step 4: Simplify right side
    21,621.48x = 378,022,502.66
  5. Step 5: Solve for x
    x = 378,022,502.66/21,621.48
  6. Step 6: Final answer
    x = 17,483.66

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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.