Home / 14,081.05-19,435.31-8,419.15

Finding the Fourth Proportional to 14,081.05, 19,435.31 and 8,419.15

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Solution

The fourth proportional to 14,081.05, 19,435.31 and 8,419.15 is: 11,620.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,081.05 : 19,435.31 = 8,419.15 : x
  2. Step 2: Convert to fraction form
    14,081.05/19,435.31 = 8,419.15/x
  3. Step 3: Cross multiply
    14,081.05x = 19,435.31 × 8,419.15
  4. Step 4: Simplify right side
    14,081.05x = 163,628,790.19
  5. Step 5: Solve for x
    x = 163,628,790.19/14,081.05
  6. Step 6: Final answer
    x = 11,620.50

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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.