Home / 13,391.57-20,085.08-3,530.95

Finding the Fourth Proportional to 13,391.57, 20,085.08 and 3,530.95

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Solution

The fourth proportional to 13,391.57, 20,085.08 and 3,530.95 is: 5,295.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.57 : 20,085.08 = 3,530.95 : x
  2. Step 2: Convert to fraction form
    13,391.57/20,085.08 = 3,530.95/x
  3. Step 3: Cross multiply
    13,391.57x = 20,085.08 × 3,530.95
  4. Step 4: Simplify right side
    13,391.57x = 70,919,345.36
  5. Step 5: Solve for x
    x = 70,919,345.36/13,391.57
  6. Step 6: Final answer
    x = 5,295.82

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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.