Home / 20,834.88-31,252.32-9,148.20

Finding the Fourth Proportional to 20,834.88, 31,252.32 and 9,148.20

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Solution

The fourth proportional to 20,834.88, 31,252.32 and 9,148.20 is: 13,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.88 : 31,252.32 = 9,148.20 : x
  2. Step 2: Convert to fraction form
    20,834.88/31,252.32 = 9,148.20/x
  3. Step 3: Cross multiply
    20,834.88x = 31,252.32 × 9,148.20
  4. Step 4: Simplify right side
    20,834.88x = 285,902,473.82
  5. Step 5: Solve for x
    x = 285,902,473.82/20,834.88
  6. Step 6: Final answer
    x = 13,722.30

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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.