Home / 12,203.90-18,303.35-3,438.89

Finding the Fourth Proportional to 12,203.90, 18,303.35 and 3,438.89

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Solution

The fourth proportional to 12,203.90, 18,303.35 and 3,438.89 is: 5,157.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,203.90 : 18,303.35 = 3,438.89 : x
  2. Step 2: Convert to fraction form
    12,203.90/18,303.35 = 3,438.89/x
  3. Step 3: Cross multiply
    12,203.90x = 18,303.35 × 3,438.89
  4. Step 4: Simplify right side
    12,203.90x = 62,943,098.57
  5. Step 5: Solve for x
    x = 62,943,098.57/12,203.90
  6. Step 6: Final answer
    x = 5,157.62

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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.