Home / 12,187.86-18,283.16-4,791.34

Finding the Fourth Proportional to 12,187.86, 18,283.16 and 4,791.34

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Solution

The fourth proportional to 12,187.86, 18,283.16 and 4,791.34 is: 7,187.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.86 : 18,283.16 = 4,791.34 : x
  2. Step 2: Convert to fraction form
    12,187.86/18,283.16 = 4,791.34/x
  3. Step 3: Cross multiply
    12,187.86x = 18,283.16 × 4,791.34
  4. Step 4: Simplify right side
    12,187.86x = 87,600,835.83
  5. Step 5: Solve for x
    x = 87,600,835.83/12,187.86
  6. Step 6: Final answer
    x = 7,187.55

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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.