Home / 15,933.72-21,987.33-8,859.54

Finding the Fourth Proportional to 15,933.72, 21,987.33 and 8,859.54

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Solution

The fourth proportional to 15,933.72, 21,987.33 and 8,859.54 is: 12,225.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.72 : 21,987.33 = 8,859.54 : x
  2. Step 2: Convert to fraction form
    15,933.72/21,987.33 = 8,859.54/x
  3. Step 3: Cross multiply
    15,933.72x = 21,987.33 × 8,859.54
  4. Step 4: Simplify right side
    15,933.72x = 194,797,629.63
  5. Step 5: Solve for x
    x = 194,797,629.63/15,933.72
  6. Step 6: Final answer
    x = 12,225.50

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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.