Home / 20,449.87-30,662.40-13,339.42

Finding the Fourth Proportional to 20,449.87, 30,662.40 and 13,339.42

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Solution

The fourth proportional to 20,449.87, 30,662.40 and 13,339.42 is: 20,001.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.87 : 30,662.40 = 13,339.42 : x
  2. Step 2: Convert to fraction form
    20,449.87/30,662.40 = 13,339.42/x
  3. Step 3: Cross multiply
    20,449.87x = 30,662.40 × 13,339.42
  4. Step 4: Simplify right side
    20,449.87x = 409,018,631.81
  5. Step 5: Solve for x
    x = 409,018,631.81/20,449.87
  6. Step 6: Final answer
    x = 20,001.04

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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.