Home / 21,490.48-29,654.72-11,929.66

Finding the Fourth Proportional to 21,490.48, 29,654.72 and 11,929.66

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Solution

The fourth proportional to 21,490.48, 29,654.72 and 11,929.66 is: 16,461.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,490.48 : 29,654.72 = 11,929.66 : x
  2. Step 2: Convert to fraction form
    21,490.48/29,654.72 = 11,929.66/x
  3. Step 3: Cross multiply
    21,490.48x = 29,654.72 × 11,929.66
  4. Step 4: Simplify right side
    21,490.48x = 353,770,727.00
  5. Step 5: Solve for x
    x = 353,770,727.00/21,490.48
  6. Step 6: Final answer
    x = 16,461.74

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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.