Home / 21,219.14-31,770.18-14,189.42

Finding the Fourth Proportional to 21,219.14, 31,770.18 and 14,189.42

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Solution

The fourth proportional to 21,219.14, 31,770.18 and 14,189.42 is: 21,244.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.14 : 31,770.18 = 14,189.42 : x
  2. Step 2: Convert to fraction form
    21,219.14/31,770.18 = 14,189.42/x
  3. Step 3: Cross multiply
    21,219.14x = 31,770.18 × 14,189.42
  4. Step 4: Simplify right side
    21,219.14x = 450,800,268.64
  5. Step 5: Solve for x
    x = 450,800,268.64/21,219.14
  6. Step 6: Final answer
    x = 21,244.99

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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.