Home / 21,350.54-29,465.11-11,919.10

Finding the Fourth Proportional to 21,350.54, 29,465.11 and 11,919.10

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Solution

The fourth proportional to 21,350.54, 29,465.11 and 11,919.10 is: 16,449.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350.54 : 29,465.11 = 11,919.10 : x
  2. Step 2: Convert to fraction form
    21,350.54/29,465.11 = 11,919.10/x
  3. Step 3: Cross multiply
    21,350.54x = 29,465.11 × 11,919.10
  4. Step 4: Simplify right side
    21,350.54x = 351,197,592.60
  5. Step 5: Solve for x
    x = 351,197,592.60/21,350.54
  6. Step 6: Final answer
    x = 16,449.12

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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.