Home / 20,898.05-31,345.97-6,856.23

Finding the Fourth Proportional to 20,898.05, 31,345.97 and 6,856.23

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Solution

The fourth proportional to 20,898.05, 31,345.97 and 6,856.23 is: 10,283.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.05 : 31,345.97 = 6,856.23 : x
  2. Step 2: Convert to fraction form
    20,898.05/31,345.97 = 6,856.23/x
  3. Step 3: Cross multiply
    20,898.05x = 31,345.97 × 6,856.23
  4. Step 4: Simplify right side
    20,898.05x = 214,915,179.89
  5. Step 5: Solve for x
    x = 214,915,179.89/20,898.05
  6. Step 6: Final answer
    x = 10,283.98

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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.