Home / 13,436.15-20,126.50-7,872.62

Finding the Fourth Proportional to 13,436.15, 20,126.50 and 7,872.62

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Solution

The fourth proportional to 13,436.15, 20,126.50 and 7,872.62 is: 11,792.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.15 : 20,126.50 = 7,872.62 : x
  2. Step 2: Convert to fraction form
    13,436.15/20,126.50 = 7,872.62/x
  3. Step 3: Cross multiply
    13,436.15x = 20,126.50 × 7,872.62
  4. Step 4: Simplify right side
    13,436.15x = 158,448,166.12
  5. Step 5: Solve for x
    x = 158,448,166.12/13,436.15
  6. Step 6: Final answer
    x = 11,792.68

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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.