Home / 28,245.38-42,409.67-15,789.78

Finding the Fourth Proportional to 28,245.38, 42,409.67 and 15,789.78

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Solution

The fourth proportional to 28,245.38, 42,409.67 and 15,789.78 is: 23,707.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.38 : 42,409.67 = 15,789.78 : x
  2. Step 2: Convert to fraction form
    28,245.38/42,409.67 = 15,789.78/x
  3. Step 3: Cross multiply
    28,245.38x = 42,409.67 × 15,789.78
  4. Step 4: Simplify right side
    28,245.38x = 669,639,280.22
  5. Step 5: Solve for x
    x = 669,639,280.22/28,245.38
  6. Step 6: Final answer
    x = 23,707.93

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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.