Home / 13,630.57-20,436.28-5,303.56

Finding the Fourth Proportional to 13,630.57, 20,436.28 and 5,303.56

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Solution

The fourth proportional to 13,630.57, 20,436.28 and 5,303.56 is: 7,951.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.57 : 20,436.28 = 5,303.56 : x
  2. Step 2: Convert to fraction form
    13,630.57/20,436.28 = 5,303.56/x
  3. Step 3: Cross multiply
    13,630.57x = 20,436.28 × 5,303.56
  4. Step 4: Simplify right side
    13,630.57x = 108,385,037.16
  5. Step 5: Solve for x
    x = 108,385,037.16/13,630.57
  6. Step 6: Final answer
    x = 7,951.61

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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.