Home / 20,535.96-28,339.61-11,104.50

Finding the Fourth Proportional to 20,535.96, 28,339.61 and 11,104.50

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Solution

The fourth proportional to 20,535.96, 28,339.61 and 11,104.50 is: 15,324.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.96 : 28,339.61 = 11,104.50 : x
  2. Step 2: Convert to fraction form
    20,535.96/28,339.61 = 11,104.50/x
  3. Step 3: Cross multiply
    20,535.96x = 28,339.61 × 11,104.50
  4. Step 4: Simplify right side
    20,535.96x = 314,697,143.72
  5. Step 5: Solve for x
    x = 314,697,143.72/20,535.96
  6. Step 6: Final answer
    x = 15,324.20

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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.