Home / 12,135.25-18,209.95-5,114.83

Finding the Fourth Proportional to 12,135.25, 18,209.95 and 5,114.83

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Solution

The fourth proportional to 12,135.25, 18,209.95 and 5,114.83 is: 7,675.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.25 : 18,209.95 = 5,114.83 : x
  2. Step 2: Convert to fraction form
    12,135.25/18,209.95 = 5,114.83/x
  3. Step 3: Cross multiply
    12,135.25x = 18,209.95 × 5,114.83
  4. Step 4: Simplify right side
    12,135.25x = 93,140,772.98
  5. Step 5: Solve for x
    x = 93,140,772.98/12,135.25
  6. Step 6: Final answer
    x = 7,675.23

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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.