Home / 20,870.46-31,288.41-10,493.82

Finding the Fourth Proportional to 20,870.46, 31,288.41 and 10,493.82

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Solution

The fourth proportional to 20,870.46, 31,288.41 and 10,493.82 is: 15,732.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870.46 : 31,288.41 = 10,493.82 : x
  2. Step 2: Convert to fraction form
    20,870.46/31,288.41 = 10,493.82/x
  3. Step 3: Cross multiply
    20,870.46x = 31,288.41 × 10,493.82
  4. Step 4: Simplify right side
    20,870.46x = 328,334,942.63
  5. Step 5: Solve for x
    x = 328,334,942.63/20,870.46
  6. Step 6: Final answer
    x = 15,732.04

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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.