Home / 20,313.38-28,033.76-11,360.95

Finding the Fourth Proportional to 20,313.38, 28,033.76 and 11,360.95

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Solution

The fourth proportional to 20,313.38, 28,033.76 and 11,360.95 is: 15,678.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.38 : 28,033.76 = 11,360.95 : x
  2. Step 2: Convert to fraction form
    20,313.38/28,033.76 = 11,360.95/x
  3. Step 3: Cross multiply
    20,313.38x = 28,033.76 × 11,360.95
  4. Step 4: Simplify right side
    20,313.38x = 318,490,040.08
  5. Step 5: Solve for x
    x = 318,490,040.08/20,313.38
  6. Step 6: Final answer
    x = 15,678.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.