Home / 21,135.24-29,165.16-11,703

Finding the Fourth Proportional to 21,135.24, 29,165.16 and 11,703

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Solution

The fourth proportional to 21,135.24, 29,165.16 and 11,703 is: 16,149.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.24 : 29,165.16 = 11,703 : x
  2. Step 2: Convert to fraction form
    21,135.24/29,165.16 = 11,703/x
  3. Step 3: Cross multiply
    21,135.24x = 29,165.16 × 11,703
  4. Step 4: Simplify right side
    21,135.24x = 341,319,867.48
  5. Step 5: Solve for x
    x = 341,319,867.48/21,135.24
  6. Step 6: Final answer
    x = 16,149.33

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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.