Home / 21,322.87-29,427.36-11,763.64

Finding the Fourth Proportional to 21,322.87, 29,427.36 and 11,763.64

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Solution

The fourth proportional to 21,322.87, 29,427.36 and 11,763.64 is: 16,234.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.87 : 29,427.36 = 11,763.64 : x
  2. Step 2: Convert to fraction form
    21,322.87/29,427.36 = 11,763.64/x
  3. Step 3: Cross multiply
    21,322.87x = 29,427.36 × 11,763.64
  4. Step 4: Simplify right side
    21,322.87x = 346,172,869.19
  5. Step 5: Solve for x
    x = 346,172,869.19/21,322.87
  6. Step 6: Final answer
    x = 16,234.82

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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.