Home / 20,856.26-31,283.58-7,708.34

Finding the Fourth Proportional to 20,856.26, 31,283.58 and 7,708.34

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Solution

The fourth proportional to 20,856.26, 31,283.58 and 7,708.34 is: 11,562.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856.26 : 31,283.58 = 7,708.34 : x
  2. Step 2: Convert to fraction form
    20,856.26/31,283.58 = 7,708.34/x
  3. Step 3: Cross multiply
    20,856.26x = 31,283.58 × 7,708.34
  4. Step 4: Simplify right side
    20,856.26x = 241,144,471.06
  5. Step 5: Solve for x
    x = 241,144,471.06/20,856.26
  6. Step 6: Final answer
    x = 11,562.21

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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.