Home / 21,282.54-29,395.70-15,609.11

Finding the Fourth Proportional to 21,282.54, 29,395.70 and 15,609.11

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Solution

The fourth proportional to 21,282.54, 29,395.70 and 15,609.11 is: 21,559.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.54 : 29,395.70 = 15,609.11 : x
  2. Step 2: Convert to fraction form
    21,282.54/29,395.70 = 15,609.11/x
  3. Step 3: Cross multiply
    21,282.54x = 29,395.70 × 15,609.11
  4. Step 4: Simplify right side
    21,282.54x = 458,840,489.80
  5. Step 5: Solve for x
    x = 458,840,489.80/21,282.54
  6. Step 6: Final answer
    x = 21,559.48

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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.