Home / 13,436.87-18,544.40-8,134.61

Finding the Fourth Proportional to 13,436.87, 18,544.40 and 8,134.61

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Solution

The fourth proportional to 13,436.87, 18,544.40 and 8,134.61 is: 11,226.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.87 : 18,544.40 = 8,134.61 : x
  2. Step 2: Convert to fraction form
    13,436.87/18,544.40 = 8,134.61/x
  3. Step 3: Cross multiply
    13,436.87x = 18,544.40 × 8,134.61
  4. Step 4: Simplify right side
    13,436.87x = 150,851,328.29
  5. Step 5: Solve for x
    x = 150,851,328.29/13,436.87
  6. Step 6: Final answer
    x = 11,226.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.