Home / 14,138.68-21,175.20-13,646.62

Finding the Fourth Proportional to 14,138.68, 21,175.20 and 13,646.62

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Solution

The fourth proportional to 14,138.68, 21,175.20 and 13,646.62 is: 20,438.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.68 : 21,175.20 = 13,646.62 : x
  2. Step 2: Convert to fraction form
    14,138.68/21,175.20 = 13,646.62/x
  3. Step 3: Cross multiply
    14,138.68x = 21,175.20 × 13,646.62
  4. Step 4: Simplify right side
    14,138.68x = 288,969,907.82
  5. Step 5: Solve for x
    x = 288,969,907.82/14,138.68
  6. Step 6: Final answer
    x = 20,438.25

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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.