Home / 21,468.64-29,628.46-11,909.48

Finding the Fourth Proportional to 21,468.64, 29,628.46 and 11,909.48

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Solution

The fourth proportional to 21,468.64, 29,628.46 and 11,909.48 is: 16,436.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,468.64 : 29,628.46 = 11,909.48 : x
  2. Step 2: Convert to fraction form
    21,468.64/29,628.46 = 11,909.48/x
  3. Step 3: Cross multiply
    21,468.64x = 29,628.46 × 11,909.48
  4. Step 4: Simplify right side
    21,468.64x = 352,859,551.80
  5. Step 5: Solve for x
    x = 352,859,551.80/21,468.64
  6. Step 6: Final answer
    x = 16,436.05

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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.