Home / 20,865.84-31,300.46-6,825.58

Finding the Fourth Proportional to 20,865.84, 31,300.46 and 6,825.58

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Solution

The fourth proportional to 20,865.84, 31,300.46 and 6,825.58 is: 10,238.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.84 : 31,300.46 = 6,825.58 : x
  2. Step 2: Convert to fraction form
    20,865.84/31,300.46 = 6,825.58/x
  3. Step 3: Cross multiply
    20,865.84x = 31,300.46 × 6,825.58
  4. Step 4: Simplify right side
    20,865.84x = 213,643,793.77
  5. Step 5: Solve for x
    x = 213,643,793.77/20,865.84
  6. Step 6: Final answer
    x = 10,238.93

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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.