Home / 21,067.91-29,085.40-14,363.39

Finding the Fourth Proportional to 21,067.91, 29,085.40 and 14,363.39

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Solution

The fourth proportional to 21,067.91, 29,085.40 and 14,363.39 is: 19,829.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.91 : 29,085.40 = 14,363.39 : x
  2. Step 2: Convert to fraction form
    21,067.91/29,085.40 = 14,363.39/x
  3. Step 3: Cross multiply
    21,067.91x = 29,085.40 × 14,363.39
  4. Step 4: Simplify right side
    21,067.91x = 417,764,980.31
  5. Step 5: Solve for x
    x = 417,764,980.31/21,067.91
  6. Step 6: Final answer
    x = 19,829.44

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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.