Home / 21,018.94-29,007.21-11,587.48

Finding the Fourth Proportional to 21,018.94, 29,007.21 and 11,587.48

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Solution

The fourth proportional to 21,018.94, 29,007.21 and 11,587.48 is: 15,991.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.94 : 29,007.21 = 11,587.48 : x
  2. Step 2: Convert to fraction form
    21,018.94/29,007.21 = 11,587.48/x
  3. Step 3: Cross multiply
    21,018.94x = 29,007.21 × 11,587.48
  4. Step 4: Simplify right side
    21,018.94x = 336,120,465.73
  5. Step 5: Solve for x
    x = 336,120,465.73/21,018.94
  6. Step 6: Final answer
    x = 15,991.31

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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.