Home / 12,203.76-18,305.55-3,438.63

Finding the Fourth Proportional to 12,203.76, 18,305.55 and 3,438.63

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Solution

The fourth proportional to 12,203.76, 18,305.55 and 3,438.63 is: 5,157.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,203.76 : 18,305.55 = 3,438.63 : x
  2. Step 2: Convert to fraction form
    12,203.76/18,305.55 = 3,438.63/x
  3. Step 3: Cross multiply
    12,203.76x = 18,305.55 × 3,438.63
  4. Step 4: Simplify right side
    12,203.76x = 62,946,013.40
  5. Step 5: Solve for x
    x = 62,946,013.40/12,203.76
  6. Step 6: Final answer
    x = 5,157.92

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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.