Home / 21,641.52-29,866.79-12,083.28

Finding the Fourth Proportional to 21,641.52, 29,866.79 and 12,083.28

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Solution

The fourth proportional to 21,641.52, 29,866.79 and 12,083.28 is: 16,675.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,641.52 : 29,866.79 = 12,083.28 : x
  2. Step 2: Convert to fraction form
    21,641.52/29,866.79 = 12,083.28/x
  3. Step 3: Cross multiply
    21,641.52x = 29,866.79 × 12,083.28
  4. Step 4: Simplify right side
    21,641.52x = 360,888,786.27
  5. Step 5: Solve for x
    x = 360,888,786.27/21,641.52
  6. Step 6: Final answer
    x = 16,675.76

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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.