Home / 21,387.25-29,514.41-11,957.77

Finding the Fourth Proportional to 21,387.25, 29,514.41 and 11,957.77

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Solution

The fourth proportional to 21,387.25, 29,514.41 and 11,957.77 is: 16,501.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387.25 : 29,514.41 = 11,957.77 : x
  2. Step 2: Convert to fraction form
    21,387.25/29,514.41 = 11,957.77/x
  3. Step 3: Cross multiply
    21,387.25x = 29,514.41 × 11,957.77
  4. Step 4: Simplify right side
    21,387.25x = 352,926,526.47
  5. Step 5: Solve for x
    x = 352,926,526.47/21,387.25
  6. Step 6: Final answer
    x = 16,501.73

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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.