Home / 14,705.28-20,293.74-8,419.68

Finding the Fourth Proportional to 14,705.28, 20,293.74 and 8,419.68

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Solution

The fourth proportional to 14,705.28, 20,293.74 and 8,419.68 is: 11,619.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,705.28 : 20,293.74 = 8,419.68 : x
  2. Step 2: Convert to fraction form
    14,705.28/20,293.74 = 8,419.68/x
  3. Step 3: Cross multiply
    14,705.28x = 20,293.74 × 8,419.68
  4. Step 4: Simplify right side
    14,705.28x = 170,866,796.80
  5. Step 5: Solve for x
    x = 170,866,796.80/14,705.28
  6. Step 6: Final answer
    x = 11,619.42

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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.