Home / 28,200.86-42,299.73-9,478.97

Finding the Fourth Proportional to 28,200.86, 42,299.73 and 9,478.97

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Solution

The fourth proportional to 28,200.86, 42,299.73 and 9,478.97 is: 14,217.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.86 : 42,299.73 = 9,478.97 : x
  2. Step 2: Convert to fraction form
    28,200.86/42,299.73 = 9,478.97/x
  3. Step 3: Cross multiply
    28,200.86x = 42,299.73 × 9,478.97
  4. Step 4: Simplify right side
    28,200.86x = 400,957,871.68
  5. Step 5: Solve for x
    x = 400,957,871.68/28,200.86
  6. Step 6: Final answer
    x = 14,217.93

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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.