Home / 12,913.80-19,373.40-4,149.60

Finding the Fourth Proportional to 12,913.80, 19,373.40 and 4,149.60

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Solution

The fourth proportional to 12,913.80, 19,373.40 and 4,149.60 is: 6,225.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913.80 : 19,373.40 = 4,149.60 : x
  2. Step 2: Convert to fraction form
    12,913.80/19,373.40 = 4,149.60/x
  3. Step 3: Cross multiply
    12,913.80x = 19,373.40 × 4,149.60
  4. Step 4: Simplify right side
    12,913.80x = 80,391,860.64
  5. Step 5: Solve for x
    x = 80,391,860.64/12,913.80
  6. Step 6: Final answer
    x = 6,225.27

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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.