Home / 21,568.62-29,758.71-12,952.58

Finding the Fourth Proportional to 21,568.62, 29,758.71 and 12,952.58

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Solution

The fourth proportional to 21,568.62, 29,758.71 and 12,952.58 is: 17,870.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,568.62 : 29,758.71 = 12,952.58 : x
  2. Step 2: Convert to fraction form
    21,568.62/29,758.71 = 12,952.58/x
  3. Step 3: Cross multiply
    21,568.62x = 29,758.71 × 12,952.58
  4. Step 4: Simplify right side
    21,568.62x = 385,452,071.97
  5. Step 5: Solve for x
    x = 385,452,071.97/21,568.62
  6. Step 6: Final answer
    x = 17,870.97

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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.