Home / 21,651.48-29,876.13-12,090.24

Finding the Fourth Proportional to 21,651.48, 29,876.13 and 12,090.24

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Solution

The fourth proportional to 21,651.48, 29,876.13 and 12,090.24 is: 16,682.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,651.48 : 29,876.13 = 12,090.24 : x
  2. Step 2: Convert to fraction form
    21,651.48/29,876.13 = 12,090.24/x
  3. Step 3: Cross multiply
    21,651.48x = 29,876.13 × 12,090.24
  4. Step 4: Simplify right side
    21,651.48x = 361,209,581.97
  5. Step 5: Solve for x
    x = 361,209,581.97/21,651.48
  6. Step 6: Final answer
    x = 16,682.90

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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.