Home / 21,308.30-31,933.26-13,522.58

Finding the Fourth Proportional to 21,308.30, 31,933.26 and 13,522.58

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Solution

The fourth proportional to 21,308.30, 31,933.26 and 13,522.58 is: 20,265.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.30 : 31,933.26 = 13,522.58 : x
  2. Step 2: Convert to fraction form
    21,308.30/31,933.26 = 13,522.58/x
  3. Step 3: Cross multiply
    21,308.30x = 31,933.26 × 13,522.58
  4. Step 4: Simplify right side
    21,308.30x = 431,820,063.01
  5. Step 5: Solve for x
    x = 431,820,063.01/21,308.30
  6. Step 6: Final answer
    x = 20,265.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.