Home / 21,568.87-29,759.06-12,952.83

Finding the Fourth Proportional to 21,568.87, 29,759.06 and 12,952.83

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Solution

The fourth proportional to 21,568.87, 29,759.06 and 12,952.83 is: 17,871.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,568.87 : 29,759.06 = 12,952.83 : x
  2. Step 2: Convert to fraction form
    21,568.87/29,759.06 = 12,952.83/x
  3. Step 3: Cross multiply
    21,568.87x = 29,759.06 × 12,952.83
  4. Step 4: Simplify right side
    21,568.87x = 385,464,045.14
  5. Step 5: Solve for x
    x = 385,464,045.14/21,568.87
  6. Step 6: Final answer
    x = 17,871.31

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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.