Home / 20,422.76-30,579.06-14,169.56

Finding the Fourth Proportional to 20,422.76, 30,579.06 and 14,169.56

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Solution

The fourth proportional to 20,422.76, 30,579.06 and 14,169.56 is: 21,216.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.76 : 30,579.06 = 14,169.56 : x
  2. Step 2: Convert to fraction form
    20,422.76/30,579.06 = 14,169.56/x
  3. Step 3: Cross multiply
    20,422.76x = 30,579.06 × 14,169.56
  4. Step 4: Simplify right side
    20,422.76x = 433,291,825.41
  5. Step 5: Solve for x
    x = 433,291,825.41/20,422.76
  6. Step 6: Final answer
    x = 21,216.12

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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.