Home / 20,937.42-31,416.84-13,922.24

Finding the Fourth Proportional to 20,937.42, 31,416.84 and 13,922.24

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Solution

The fourth proportional to 20,937.42, 31,416.84 and 13,922.24 is: 20,890.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.42 : 31,416.84 = 13,922.24 : x
  2. Step 2: Convert to fraction form
    20,937.42/31,416.84 = 13,922.24/x
  3. Step 3: Cross multiply
    20,937.42x = 31,416.84 × 13,922.24
  4. Step 4: Simplify right side
    20,937.42x = 437,392,629.44
  5. Step 5: Solve for x
    x = 437,392,629.44/20,937.42
  6. Step 6: Final answer
    x = 20,890.47

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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.