Home / 13,438.38-20,134.46-10,482.68

Finding the Fourth Proportional to 13,438.38, 20,134.46 and 10,482.68

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Solution

The fourth proportional to 13,438.38, 20,134.46 and 10,482.68 is: 15,705.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.38 : 20,134.46 = 10,482.68 : x
  2. Step 2: Convert to fraction form
    13,438.38/20,134.46 = 10,482.68/x
  3. Step 3: Cross multiply
    13,438.38x = 20,134.46 × 10,482.68
  4. Step 4: Simplify right side
    13,438.38x = 211,063,101.15
  5. Step 5: Solve for x
    x = 211,063,101.15/13,438.38
  6. Step 6: Final answer
    x = 15,705.99

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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.