Home / 13,436.84-18,537.93-8,129.72

Finding the Fourth Proportional to 13,436.84, 18,537.93 and 8,129.72

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Solution

The fourth proportional to 13,436.84, 18,537.93 and 8,129.72 is: 11,216.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.84 : 18,537.93 = 8,129.72 : x
  2. Step 2: Convert to fraction form
    13,436.84/18,537.93 = 8,129.72/x
  3. Step 3: Cross multiply
    13,436.84x = 18,537.93 × 8,129.72
  4. Step 4: Simplify right side
    13,436.84x = 150,708,226.62
  5. Step 5: Solve for x
    x = 150,708,226.62/13,436.84
  6. Step 6: Final answer
    x = 11,216.04

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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.