Home / 21,330.24-29,436.54-11,900.64

Finding the Fourth Proportional to 21,330.24, 29,436.54 and 11,900.64

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Solution

The fourth proportional to 21,330.24, 29,436.54 and 11,900.64 is: 16,423.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.24 : 29,436.54 = 11,900.64 : x
  2. Step 2: Convert to fraction form
    21,330.24/29,436.54 = 11,900.64/x
  3. Step 3: Cross multiply
    21,330.24x = 29,436.54 × 11,900.64
  4. Step 4: Simplify right side
    21,330.24x = 350,313,665.39
  5. Step 5: Solve for x
    x = 350,313,665.39/21,330.24
  6. Step 6: Final answer
    x = 16,423.33

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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.