Home / 20,678.68-31,030.98-10,825.84

Finding the Fourth Proportional to 20,678.68, 31,030.98 and 10,825.84

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Solution

The fourth proportional to 20,678.68, 31,030.98 and 10,825.84 is: 16,245.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.68 : 31,030.98 = 10,825.84 : x
  2. Step 2: Convert to fraction form
    20,678.68/31,030.98 = 10,825.84/x
  3. Step 3: Cross multiply
    20,678.68x = 31,030.98 × 10,825.84
  4. Step 4: Simplify right side
    20,678.68x = 335,936,424.52
  5. Step 5: Solve for x
    x = 335,936,424.52/20,678.68
  6. Step 6: Final answer
    x = 16,245.54

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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.