Home / 20,187.42-30,278.97-7,039.50

Finding the Fourth Proportional to 20,187.42, 30,278.97 and 7,039.50

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Solution

The fourth proportional to 20,187.42, 30,278.97 and 7,039.50 is: 10,558.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.42 : 30,278.97 = 7,039.50 : x
  2. Step 2: Convert to fraction form
    20,187.42/30,278.97 = 7,039.50/x
  3. Step 3: Cross multiply
    20,187.42x = 30,278.97 × 7,039.50
  4. Step 4: Simplify right side
    20,187.42x = 213,148,809.32
  5. Step 5: Solve for x
    x = 213,148,809.32/20,187.42
  6. Step 6: Final answer
    x = 10,558.50

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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.