Home / 21,078.46-29,089.74-11,646.82

Finding the Fourth Proportional to 21,078.46, 29,089.74 and 11,646.82

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Solution

The fourth proportional to 21,078.46, 29,089.74 and 11,646.82 is: 16,073.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,078.46 : 29,089.74 = 11,646.82 : x
  2. Step 2: Convert to fraction form
    21,078.46/29,089.74 = 11,646.82/x
  3. Step 3: Cross multiply
    21,078.46x = 29,089.74 × 11,646.82
  4. Step 4: Simplify right side
    21,078.46x = 338,802,965.63
  5. Step 5: Solve for x
    x = 338,802,965.63/21,078.46
  6. Step 6: Final answer
    x = 16,073.42

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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.