Home / 20,725.35-31,079.82-9,030.39

Finding the Fourth Proportional to 20,725.35, 31,079.82 and 9,030.39

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Solution

The fourth proportional to 20,725.35, 31,079.82 and 9,030.39 is: 13,542.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.35 : 31,079.82 = 9,030.39 : x
  2. Step 2: Convert to fraction form
    20,725.35/31,079.82 = 9,030.39/x
  3. Step 3: Cross multiply
    20,725.35x = 31,079.82 × 9,030.39
  4. Step 4: Simplify right side
    20,725.35x = 280,662,895.73
  5. Step 5: Solve for x
    x = 280,662,895.73/20,725.35
  6. Step 6: Final answer
    x = 13,542.01

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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.