Home / 21,251.42-31,880.77-6,461.83

Finding the Fourth Proportional to 21,251.42, 31,880.77 and 6,461.83

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Solution

The fourth proportional to 21,251.42, 31,880.77 and 6,461.83 is: 9,693.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.42 : 31,880.77 = 6,461.83 : x
  2. Step 2: Convert to fraction form
    21,251.42/31,880.77 = 6,461.83/x
  3. Step 3: Cross multiply
    21,251.42x = 31,880.77 × 6,461.83
  4. Step 4: Simplify right side
    21,251.42x = 206,008,116.01
  5. Step 5: Solve for x
    x = 206,008,116.01/21,251.42
  6. Step 6: Final answer
    x = 9,693.85

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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.