Home / 21,814.57-30,103.29-13,330.88

Finding the Fourth Proportional to 21,814.57, 30,103.29 and 13,330.88

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Solution

The fourth proportional to 21,814.57, 30,103.29 and 13,330.88 is: 18,396.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,814.57 : 30,103.29 = 13,330.88 : x
  2. Step 2: Convert to fraction form
    21,814.57/30,103.29 = 13,330.88/x
  3. Step 3: Cross multiply
    21,814.57x = 30,103.29 × 13,330.88
  4. Step 4: Simplify right side
    21,814.57x = 401,303,346.60
  5. Step 5: Solve for x
    x = 401,303,346.60/21,814.57
  6. Step 6: Final answer
    x = 18,396.12

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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.