Home / 19,772.25-29,729.51-18,231.09

Finding the Fourth Proportional to 19,772.25, 29,729.51 and 18,231.09

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Solution

The fourth proportional to 19,772.25, 29,729.51 and 18,231.09 is: 27,412.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,772.25 : 29,729.51 = 18,231.09 : x
  2. Step 2: Convert to fraction form
    19,772.25/29,729.51 = 18,231.09/x
  3. Step 3: Cross multiply
    19,772.25x = 29,729.51 × 18,231.09
  4. Step 4: Simplify right side
    19,772.25x = 542,001,281.31
  5. Step 5: Solve for x
    x = 542,001,281.31/19,772.25
  6. Step 6: Final answer
    x = 27,412.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.