Home / 13,419.12-20,131.90-4,653.84

Finding the Fourth Proportional to 13,419.12, 20,131.90 and 4,653.84

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Solution

The fourth proportional to 13,419.12, 20,131.90 and 4,653.84 is: 6,981.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.12 : 20,131.90 = 4,653.84 : x
  2. Step 2: Convert to fraction form
    13,419.12/20,131.90 = 4,653.84/x
  3. Step 3: Cross multiply
    13,419.12x = 20,131.90 × 4,653.84
  4. Step 4: Simplify right side
    13,419.12x = 93,690,641.50
  5. Step 5: Solve for x
    x = 93,690,641.50/13,419.12
  6. Step 6: Final answer
    x = 6,981.88

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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.