Home / 20,725.51-31,062.08-8,865.18

Finding the Fourth Proportional to 20,725.51, 31,062.08 and 8,865.18

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Solution

The fourth proportional to 20,725.51, 31,062.08 and 8,865.18 is: 13,286.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.51 : 31,062.08 = 8,865.18 : x
  2. Step 2: Convert to fraction form
    20,725.51/31,062.08 = 8,865.18/x
  3. Step 3: Cross multiply
    20,725.51x = 31,062.08 × 8,865.18
  4. Step 4: Simplify right side
    20,725.51x = 275,370,930.37
  5. Step 5: Solve for x
    x = 275,370,930.37/20,725.51
  6. Step 6: Final answer
    x = 13,286.57

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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.