Home / 20,942.55-31,387.10-9,824.69

Finding the Fourth Proportional to 20,942.55, 31,387.10 and 9,824.69

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Solution

The fourth proportional to 20,942.55, 31,387.10 and 9,824.69 is: 14,724.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.55 : 31,387.10 = 9,824.69 : x
  2. Step 2: Convert to fraction form
    20,942.55/31,387.10 = 9,824.69/x
  3. Step 3: Cross multiply
    20,942.55x = 31,387.10 × 9,824.69
  4. Step 4: Simplify right side
    20,942.55x = 308,368,556.84
  5. Step 5: Solve for x
    x = 308,368,556.84/20,942.55
  6. Step 6: Final answer
    x = 14,724.50

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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.