Home / 20,880.75-31,320.51-7,732.83

Finding the Fourth Proportional to 20,880.75, 31,320.51 and 7,732.83

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Solution

The fourth proportional to 20,880.75, 31,320.51 and 7,732.83 is: 11,599.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.75 : 31,320.51 = 7,732.83 : x
  2. Step 2: Convert to fraction form
    20,880.75/31,320.51 = 7,732.83/x
  3. Step 3: Cross multiply
    20,880.75x = 31,320.51 × 7,732.83
  4. Step 4: Simplify right side
    20,880.75x = 242,196,179.34
  5. Step 5: Solve for x
    x = 242,196,179.34/20,880.75
  6. Step 6: Final answer
    x = 11,599.02

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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.