Home / 12,390.62-18,583.77-4,070.68

Finding the Fourth Proportional to 12,390.62, 18,583.77 and 4,070.68

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Solution

The fourth proportional to 12,390.62, 18,583.77 and 4,070.68 is: 6,105.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.62 : 18,583.77 = 4,070.68 : x
  2. Step 2: Convert to fraction form
    12,390.62/18,583.77 = 4,070.68/x
  3. Step 3: Cross multiply
    12,390.62x = 18,583.77 × 4,070.68
  4. Step 4: Simplify right side
    12,390.62x = 75,648,573.31
  5. Step 5: Solve for x
    x = 75,648,573.31/12,390.62
  6. Step 6: Final answer
    x = 6,105.31

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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.