Home / 21,150.64-29,193.24-12,657.88

Finding the Fourth Proportional to 21,150.64, 29,193.24 and 12,657.88

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Solution

The fourth proportional to 21,150.64, 29,193.24 and 12,657.88 is: 17,471.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.64 : 29,193.24 = 12,657.88 : x
  2. Step 2: Convert to fraction form
    21,150.64/29,193.24 = 12,657.88/x
  3. Step 3: Cross multiply
    21,150.64x = 29,193.24 × 12,657.88
  4. Step 4: Simplify right side
    21,150.64x = 369,524,528.73
  5. Step 5: Solve for x
    x = 369,524,528.73/21,150.64
  6. Step 6: Final answer
    x = 17,471.08

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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.