Home / 21,352.87-29,467.16-12,400.75

Finding the Fourth Proportional to 21,352.87, 29,467.16 and 12,400.75

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Solution

The fourth proportional to 21,352.87, 29,467.16 and 12,400.75 is: 17,113.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,352.87 : 29,467.16 = 12,400.75 : x
  2. Step 2: Convert to fraction form
    21,352.87/29,467.16 = 12,400.75/x
  3. Step 3: Cross multiply
    21,352.87x = 29,467.16 × 12,400.75
  4. Step 4: Simplify right side
    21,352.87x = 365,414,884.37
  5. Step 5: Solve for x
    x = 365,414,884.37/21,352.87
  6. Step 6: Final answer
    x = 17,113.15

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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.