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Finding the Fourth Proportional to 13,475.80, 20,210.10 and 4,115.80

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Solution

The fourth proportional to 13,475.80, 20,210.10 and 4,115.80 is: 6,172.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,475.80 : 20,210.10 = 4,115.80 : x
  2. Step 2: Convert to fraction form
    13,475.80/20,210.10 = 4,115.80/x
  3. Step 3: Cross multiply
    13,475.80x = 20,210.10 × 4,115.80
  4. Step 4: Simplify right side
    13,475.80x = 83,180,729.58
  5. Step 5: Solve for x
    x = 83,180,729.58/13,475.80
  6. Step 6: Final answer
    x = 6,172.60

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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.