Home / 20,818.22-31,237.58-9,725.69

Finding the Fourth Proportional to 20,818.22, 31,237.58 and 9,725.69

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Solution

The fourth proportional to 20,818.22, 31,237.58 and 9,725.69 is: 14,593.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.22 : 31,237.58 = 9,725.69 : x
  2. Step 2: Convert to fraction form
    20,818.22/31,237.58 = 9,725.69/x
  3. Step 3: Cross multiply
    20,818.22x = 31,237.58 × 9,725.69
  4. Step 4: Simplify right side
    20,818.22x = 303,806,863.24
  5. Step 5: Solve for x
    x = 303,806,863.24/20,818.22
  6. Step 6: Final answer
    x = 14,593.32

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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.