Home / 21,335.92-29,429.86-12,952.42

Finding the Fourth Proportional to 21,335.92, 29,429.86 and 12,952.42

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Solution

The fourth proportional to 21,335.92, 29,429.86 and 12,952.42 is: 17,866.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.92 : 29,429.86 = 12,952.42 : x
  2. Step 2: Convert to fraction form
    21,335.92/29,429.86 = 12,952.42/x
  3. Step 3: Cross multiply
    21,335.92x = 29,429.86 × 12,952.42
  4. Step 4: Simplify right side
    21,335.92x = 381,187,907.26
  5. Step 5: Solve for x
    x = 381,187,907.26/21,335.92
  6. Step 6: Final answer
    x = 17,866.02

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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.