Home / 13,636.89-20,455.59-4,276.70

Finding the Fourth Proportional to 13,636.89, 20,455.59 and 4,276.70

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Solution

The fourth proportional to 13,636.89, 20,455.59 and 4,276.70 is: 6,415.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.89 : 20,455.59 = 4,276.70 : x
  2. Step 2: Convert to fraction form
    13,636.89/20,455.59 = 4,276.70/x
  3. Step 3: Cross multiply
    13,636.89x = 20,455.59 × 4,276.70
  4. Step 4: Simplify right side
    13,636.89x = 87,482,400.37
  5. Step 5: Solve for x
    x = 87,482,400.37/13,636.89
  6. Step 6: Final answer
    x = 6,415.13

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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.