Home / 21,434.73-29,594.36-13,380.64

Finding the Fourth Proportional to 21,434.73, 29,594.36 and 13,380.64

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Solution

The fourth proportional to 21,434.73, 29,594.36 and 13,380.64 is: 18,474.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,434.73 : 29,594.36 = 13,380.64 : x
  2. Step 2: Convert to fraction form
    21,434.73/29,594.36 = 13,380.64/x
  3. Step 3: Cross multiply
    21,434.73x = 29,594.36 × 13,380.64
  4. Step 4: Simplify right side
    21,434.73x = 395,991,603.12
  5. Step 5: Solve for x
    x = 395,991,603.12/21,434.73
  6. Step 6: Final answer
    x = 18,474.30

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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.