Home / 21,322.52-29,423.58-11,891.64

Finding the Fourth Proportional to 21,322.52, 29,423.58 and 11,891.64

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Solution

The fourth proportional to 21,322.52, 29,423.58 and 11,891.64 is: 16,409.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.52 : 29,423.58 = 11,891.64 : x
  2. Step 2: Convert to fraction form
    21,322.52/29,423.58 = 11,891.64/x
  3. Step 3: Cross multiply
    21,322.52x = 29,423.58 × 11,891.64
  4. Step 4: Simplify right side
    21,322.52x = 349,894,620.87
  5. Step 5: Solve for x
    x = 349,894,620.87/21,322.52
  6. Step 6: Final answer
    x = 16,409.63

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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.