Home / 20,958.16-31,437.24-13,172.44

Finding the Fourth Proportional to 20,958.16, 31,437.24 and 13,172.44

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Solution

The fourth proportional to 20,958.16, 31,437.24 and 13,172.44 is: 19,758.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.16 : 31,437.24 = 13,172.44 : x
  2. Step 2: Convert to fraction form
    20,958.16/31,437.24 = 13,172.44/x
  3. Step 3: Cross multiply
    20,958.16x = 31,437.24 × 13,172.44
  4. Step 4: Simplify right side
    20,958.16x = 414,105,157.67
  5. Step 5: Solve for x
    x = 414,105,157.67/20,958.16
  6. Step 6: Final answer
    x = 19,758.66

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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.