Home / 12,135.64-18,203.54-4,238.12

Finding the Fourth Proportional to 12,135.64, 18,203.54 and 4,238.12

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Solution

The fourth proportional to 12,135.64, 18,203.54 and 4,238.12 is: 6,357.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.64 : 18,203.54 = 4,238.12 : x
  2. Step 2: Convert to fraction form
    12,135.64/18,203.54 = 4,238.12/x
  3. Step 3: Cross multiply
    12,135.64x = 18,203.54 × 4,238.12
  4. Step 4: Simplify right side
    12,135.64x = 77,148,811.26
  5. Step 5: Solve for x
    x = 77,148,811.26/12,135.64
  6. Step 6: Final answer
    x = 6,357.21

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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.