Home / 27,855.96-38,438.73-15,919.26

Finding the Fourth Proportional to 27,855.96, 38,438.73 and 15,919.26

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Solution

The fourth proportional to 27,855.96, 38,438.73 and 15,919.26 is: 21,967.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,855.96 : 38,438.73 = 15,919.26 : x
  2. Step 2: Convert to fraction form
    27,855.96/38,438.73 = 15,919.26/x
  3. Step 3: Cross multiply
    27,855.96x = 38,438.73 × 15,919.26
  4. Step 4: Simplify right side
    27,855.96x = 611,916,136.94
  5. Step 5: Solve for x
    x = 611,916,136.94/27,855.96
  6. Step 6: Final answer
    x = 21,967.15

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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.