Home / 12,355.60-18,533.46-3,121.60

Finding the Fourth Proportional to 12,355.60, 18,533.46 and 3,121.60

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Solution

The fourth proportional to 12,355.60, 18,533.46 and 3,121.60 is: 4,682.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.60 : 18,533.46 = 3,121.60 : x
  2. Step 2: Convert to fraction form
    12,355.60/18,533.46 = 3,121.60/x
  3. Step 3: Cross multiply
    12,355.60x = 18,533.46 × 3,121.60
  4. Step 4: Simplify right side
    12,355.60x = 57,854,048.74
  5. Step 5: Solve for x
    x = 57,854,048.74/12,355.60
  6. Step 6: Final answer
    x = 4,682.42

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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.