Home / 15,642.20-21,586.20-8,568.56

Finding the Fourth Proportional to 15,642.20, 21,586.20 and 8,568.56

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Solution

The fourth proportional to 15,642.20, 21,586.20 and 8,568.56 is: 11,824.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,642.20 : 21,586.20 = 8,568.56 : x
  2. Step 2: Convert to fraction form
    15,642.20/21,586.20 = 8,568.56/x
  3. Step 3: Cross multiply
    15,642.20x = 21,586.20 × 8,568.56
  4. Step 4: Simplify right side
    15,642.20x = 184,962,649.87
  5. Step 5: Solve for x
    x = 184,962,649.87/15,642.20
  6. Step 6: Final answer
    x = 11,824.59

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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.